56506162215155 has 4 divisors (see below), whose sum is σ = 67807394658192. Its totient is φ = 45204929772120.

The previous prime is 56506162215091. The next prime is 56506162215157. The reversal of 56506162215155 is 55151226160565.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 56506162215155 - 2⁶ = 56506162215091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56506162215157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5650616221511 + ... + 5650616221520.

It is an arithmetic number, because the mean of its divisors is an integer number (16951848664548).

Almost surely, 2^{56506162215155} is an apocalyptic number.

56506162215155 is a deficient number, since it is larger than the sum of its proper divisors (11301232443037).

56506162215155 is a wasteful number, since it uses less digits than its factorization.

56506162215155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11301232443036.

The product of its (nonzero) digits is 2700000, while the sum is 50.

The spelling of 56506162215155 in words is "fifty-six trillion, five hundred six billion, one hundred sixty-two million, two hundred fifteen thousand, one hundred fifty-five".