56211212656 has 40 divisors (see below), whose sum is σ = 111285377280. Its totient is φ = 27493040064.

The previous prime is 56211212647. The next prime is 56211212669. The reversal of 56211212656 is 65621211265.

It is a super-3 number, since 3×56211212656³ (a number of 33 digits) contains 333 as substring.

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, 1475415 + ... + 1513033.

It is an arithmetic number, because the mean of its divisors is an integer number (2782134432).

Almost surely, 2^56211212656 is an apocalyptic number.

It is an amenable number.

56211212656 is a deficient number, since it is larger than the sum of its proper divisors (55074164624).

56211212656 is a wasteful number, since it uses less digits than its factorization.

56211212656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39661 (or 39655 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The spelling of 56211212656 in words is "fifty-six billion, two hundred eleven million, two hundred twelve thousand, six hundred fifty-six".