521102055403012 has 12 divisors (see below), whose sum is σ = 916250533435216. Its totient is φ = 259316188707240.

The previous prime is 521102055403009. The next prime is 521102055403037. The reversal of 521102055403012 is 210304550201125.

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, 308709747618 + ... + 308709749305.

Almost surely, 2^{521102055403012} is an apocalyptic number.

It is an amenable number.

521102055403012 is a deficient number, since it is larger than the sum of its proper divisors (395148478032204).

521102055403012 is a wasteful number, since it uses less digits than its factorization.

521102055403012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617419497138 (or 617419497136 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 521102055403012 in words is "five hundred twenty-one trillion, one hundred two billion, fifty-five million, four hundred three thousand, twelve".