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68887467488 = 257307533337
BaseRepresentation
bin100000000101000000…
…0110101010111100000
320120210212220221011202
41000022000311113200
52112040142424423
651351345300332
74656044545430
oct1001200652740
9216725827152
1068887467488
11272401a7a14
12114263346a8
13665aac94a8
143496d742c0
151bd2b01728
hex100a0355e0

68887467488 has 24 divisors (see below), whose sum is σ = 154996802352. Its totient is φ = 29523200256.

The previous prime is 68887467437. The next prime is 68887467503. The reversal of 68887467488 is 88476478886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153766445 + ... + 153766892.

It is an arithmetic number, because the mean of its divisors is an integer number (6458200098).

Almost surely, 268887467488 is an apocalyptic number.

It is an amenable number.

68887467488 is an abundant number, since it is smaller than the sum of its proper divisors (86109334864).

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

68887467488 is a wasteful number, since it uses less digits than its factorization.

68887467488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307533354 (or 307533346 counting only the distinct ones).

The product of its digits is 924844032, while the sum is 74.

The spelling of 68887467488 in words is "sixty-eight billion, eight hundred eighty-seven million, four hundred sixty-seven thousand, four hundred eighty-eight".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 307533337 615066674 1230133348 2152733359 2460266696 4305466718 4920533392 8610933436 9841066784 17221866872 34443733744 68887467488