521106242356 has 48 divisors (see below), whose sum is σ = 1068391949184. Its totient is φ = 217773069696.

The previous prime is 521106242347. The next prime is 521106242471. The reversal of 521106242356 is 653242601125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835255 + ... + 1319038.

It is an arithmetic number, because the mean of its divisors is an integer number (22258165608).

Almost surely, 2^521106242356 is an apocalyptic number.

It is an amenable number.

521106242356 is an abundant number, since it is smaller than the sum of its proper divisors (547285706828).

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

521106242356 is a wasteful number, since it uses less digits than its factorization.

521106242356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154520 (or 2154518 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 521106242356 in words is "five hundred twenty-one billion, one hundred six million, two hundred forty-two thousand, three hundred fifty-six".