56013356121 has 16 divisors (see below), whose sum is σ = 75623550720. Its totient is φ = 36875139840.

The previous prime is 56013356089. The next prime is 56013356141. The reversal of 56013356121 is 12165331065.

It is not a de Polignac number, because 56013356121 - 2⁵ = 56013356089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56013356141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212986 + ... + 396723.

It is an arithmetic number, because the mean of its divisors is an integer number (4726471920).

Almost surely, 2^56013356121 is an apocalyptic number.

It is an amenable number.

56013356121 is a deficient number, since it is larger than the sum of its proper divisors (19610194599).

56013356121 is a wasteful number, since it uses less digits than its factorization.

56013356121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610096.

The product of its (nonzero) digits is 16200, while the sum is 33.

Adding to 56013356121 its reverse (12165331065), we get a palindrome (68178687186).

The spelling of 56013356121 in words is "fifty-six billion, thirteen million, three hundred fifty-six thousand, one hundred twenty-one".