56321641155 has 32 divisors (see below), whose sum is σ = 102755145024. Its totient is φ = 26096541696.

The previous prime is 56321641141. The next prime is 56321641169. The reversal of 56321641155 is 55114612365.

It is an interprime number because it is at equal distance from previous prime (56321641141) and next prime (56321641169).

It is not a de Polignac number, because 56321641155 - 2⁹ = 56321640643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8491654 + ... + 8498283.

It is an arithmetic number, because the mean of its divisors is an integer number (3211098282).

Almost surely, 2^56321641155 is an apocalyptic number.

56321641155 is a deficient number, since it is larger than the sum of its proper divisors (46433503869).

56321641155 is a wasteful number, since it uses less digits than its factorization.

56321641155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16989975.

The product of its digits is 108000, while the sum is 39.

The spelling of 56321641155 in words is "fifty-six billion, three hundred twenty-one million, six hundred forty-one thousand, one hundred fifty-five".