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66160251260 = 2253308012563
BaseRepresentation
bin111101100111011101…
…010101000101111100
320022202211011222211022
4331213131111011330
52040444011020020
650221003443312
74531340566625
oct754735250574
9208684158738
1066160251260
1126070812004
12109a4b26538
136314aa3b8c
1432b8a98a4c
151ac3492625
hexf6775517c

66160251260 has 12 divisors (see below), whose sum is σ = 138936527688. Its totient is φ = 26464100496.

The previous prime is 66160251239. The next prime is 66160251271. The reversal of 66160251260 is 6215206166.

It is a self number, because there is not a number n which added to its sum of digits gives 66160251260.

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, 1654006262 + ... + 1654006301.

It is an arithmetic number, because the mean of its divisors is an integer number (11578043974).

Almost surely, 266160251260 is an apocalyptic number.

It is an amenable number.

66160251260 is an abundant number, since it is smaller than the sum of its proper divisors (72776276428).

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

66160251260 is a wasteful number, since it uses less digits than its factorization.

66160251260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308012572 (or 3308012570 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 66160251260 in words is "sixty-six billion, one hundred sixty million, two hundred fifty-one thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 3308012563 6616025126 13232050252 16540062815 33080125630 66160251260