56218151628 has 24 divisors (see below), whose sum is σ = 145750763760. Its totient is φ = 18739383840.

The previous prime is 56218151599. The next prime is 56218151629. The reversal of 56218151628 is 82615181265.

56218151628 is a `hidden beast` number, since 5 + 6 + 2 + 1 + 8 + 15 + 1 + 628 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (56218151629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260269113 + ... + 260269328.

It is an arithmetic number, because the mean of its divisors is an integer number (6072948490).

Almost surely, 2^56218151628 is an apocalyptic number.

It is an amenable number.

56218151628 is an abundant number, since it is smaller than the sum of its proper divisors (89532612132).

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

56218151628 is a wasteful number, since it uses less digits than its factorization.

56218151628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520538454 (or 520538446 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The spelling of 56218151628 in words is "fifty-six billion, two hundred eighteen million, one hundred fifty-one thousand, six hundred twenty-eight".