521314626342 has 16 divisors (see below), whose sum is σ = 1042710918912. Its totient is φ = 173757931080.

The previous prime is 521314626223. The next prime is 521314626421. The reversal of 521314626342 is 243626413125.

It is a self number, because there is not a number n which added to its sum of digits gives 521314626342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3319618 + ... + 3473109.

It is an arithmetic number, because the mean of its divisors is an integer number (65169432432).

Almost surely, 2^521314626342 is an apocalyptic number.

521314626342 is an abundant number, since it is smaller than the sum of its proper divisors (521396292570).

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

521314626342 is a wasteful number, since it uses less digits than its factorization.

521314626342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6805523.

The product of its digits is 207360, while the sum is 39.

The spelling of 521314626342 in words is "five hundred twenty-one billion, three hundred fourteen million, six hundred twenty-six thousand, three hundred forty-two".