345542335252520 has 64 divisors (see below), whose sum is σ = 888901440768000. Its totient is φ = 118423123499520.

The previous prime is 345542335252381. The next prime is 345542335252567. The reversal of 345542335252520 is 25252533245543.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252098120 + ... + 253465079.

It is an arithmetic number, because the mean of its divisors is an integer number (13889085012000).

Almost surely, 2^{345542335252520} is an apocalyptic number.

It is an amenable number.

345542335252520 is an abundant number, since it is smaller than the sum of its proper divisors (543359105515480).

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

345542335252520 is a wasteful number, since it uses less digits than its factorization.

345542335252520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505565658 (or 505565654 counting only the distinct ones).

The product of its (nonzero) digits is 21600000, while the sum is 50.

The spelling of 345542335252520 in words is "three hundred forty-five trillion, five hundred forty-two billion, three hundred thirty-five million, two hundred fifty-two thousand, five hundred twenty".