512213421611656 has 128 divisors (see below), whose sum is σ = 1031964618608640. Its totient is φ = 237943144857600.

The previous prime is 512213421611609. The next prime is 512213421611693. The reversal of 512213421611656 is 656116124312215.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153089281 + ... + 156399343.

It is an arithmetic number, because the mean of its divisors is an integer number (8062223582880).

Almost surely, 2^{512213421611656} is an apocalyptic number.

It is an amenable number.

512213421611656 is an abundant number, since it is smaller than the sum of its proper divisors (519751196996984).

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

512213421611656 is a wasteful number, since it uses less digits than its factorization.

512213421611656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310407 (or 3310403 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The spelling of 512213421611656 in words is "five hundred twelve trillion, two hundred thirteen billion, four hundred twenty-one million, six hundred eleven thousand, six hundred fifty-six".