56118264021 has 8 divisors (see below), whose sum is σ = 83138168960. Its totient is φ = 37412175996.

The previous prime is 56118264019. The next prime is 56118264023. The reversal of 56118264021 is 12046281165.

It is a happy number.

56118264021 is a `hidden beast` number, since 5 + 6 + 1 + 1 + 8 + 2 + 640 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (56118264019) and next prime (56118264023).

It is not a de Polignac number, because 56118264021 - 2¹ = 56118264019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56118264023) 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, 1039227085 + ... + 1039227138.

It is an arithmetic number, because the mean of its divisors is an integer number (10392271120).

Almost surely, 2^56118264021 is an apocalyptic number.

It is an amenable number.

56118264021 is a deficient number, since it is larger than the sum of its proper divisors (27019904939).

56118264021 is a wasteful number, since it uses less digits than its factorization.

56118264021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078454232 (or 2078454226 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 56118264021 in words is "fifty-six billion, one hundred eighteen million, two hundred sixty-four thousand, twenty-one".