345857159520 has 72 divisors (see below), whose sum is σ = 1180237561776. Its totient is φ = 92228575488.

The previous prime is 345857159513. The next prime is 345857159537. The reversal of 345857159520 is 25951758543.

345857159520 is a `hidden beast` number, since 3 + 4 + 58 + 57 + 15 + 9 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120087852 + ... + 120090731.

It is an arithmetic number, because the mean of its divisors is an integer number (16392188358).

Almost surely, 2^345857159520 is an apocalyptic number.

345857159520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345857159520 is an abundant number, since it is smaller than the sum of its proper divisors (834380402256).

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

345857159520 is a wasteful number, since it uses less digits than its factorization.

345857159520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240178604 (or 240178593 counting only the distinct ones).

The product of its (nonzero) digits is 7560000, while the sum is 54.

The spelling of 345857159520 in words is "three hundred forty-five billion, eight hundred fifty-seven million, one hundred fifty-nine thousand, five hundred twenty".