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66000000088 = 231129163158663
BaseRepresentation
bin111101011101111010…
…000001010001011000
320022100122122101112201
4331131322001101120
52040132000000323
650153041015544
74524353513221
oct753572012130
9208318571481
1066000000088
1125a99308a20
121095b3245b4
1362ba825cb9
1432a16a2248
151ab438a8ad
hexf5de81458

66000000088 has 64 divisors (see below), whose sum is σ = 140512838400. Its totient is φ = 28787633280.

The previous prime is 66000000067. The next prime is 66000000107. The reversal of 66000000088 is 88000000066.

66000000088 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336645 + ... + 495307.

It is an arithmetic number, because the mean of its divisors is an integer number (2195513100).

Almost surely, 266000000088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66000000088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70256419200).

66000000088 is an abundant number, since it is smaller than the sum of its proper divisors (74512838312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66000000088 is a wasteful number, since it uses less digits than its factorization.

66000000088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158872 (or 158868 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 66000000088 in words is "sixty-six billion, eighty-eight", and thus it is an aban number and an uban number.

Divisors: 1 2 4 8 11 22 29 44 58 88 116 163 232 319 326 638 652 1276 1304 1793 2552 3586 4727 7172 9454 14344 18908 37816 51997 103994 158663 207988 317326 415976 634652 1269304 1745293 3490586 4601227 6981172 9202454 13962344 18404908 25862069 36809816 50613497 51724138 101226994 103448276 202453988 206896552 284482759 404907976 568965518 750000001 1137931036 1500000002 2275862072 3000000004 6000000008 8250000011 16500000022 33000000044 66000000088