56121620155616 has 24 divisors (see below), whose sum is σ = 110649337611624. Its totient is φ = 28020201079680.

The previous prime is 56121620155613. The next prime is 56121620155619. The reversal of 56121620155616 is 61655102612165.

56121620155616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56121620155613) and next prime (56121620155619).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56121620155613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1269008735 + ... + 1269052958.

It is an arithmetic number, because the mean of its divisors is an integer number (4610389067151).

Almost surely, 2^{56121620155616} is an apocalyptic number.

It is an amenable number.

56121620155616 is a deficient number, since it is larger than the sum of its proper divisors (54527717456008).

56121620155616 is a wasteful number, since it uses less digits than its factorization.

56121620155616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538062394 (or 2538062386 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 56121620155616 in words is "fifty-six trillion, one hundred twenty-one billion, six hundred twenty million, one hundred fifty-five thousand, six hundred sixteen".