56665565055155 has 32 divisors (see below), whose sum is σ = 78266797065600. Its totient is φ = 38580333281280.

The previous prime is 56665565055149. The next prime is 56665565055163. The reversal of 56665565055155 is 55155056556665.

It is not a de Polignac number, because 56665565055155 - 2¹⁶ = 56665564989619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56665565055091 and 56665565055100.

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, 7124630 + ... + 12809819.

It is an arithmetic number, because the mean of its divisors is an integer number (2445837408300).

Almost surely, 2^{56665565055155} is an apocalyptic number.

56665565055155 is a deficient number, since it is larger than the sum of its proper divisors (21601232010445).

56665565055155 is a wasteful number, since it uses less digits than its factorization.

56665565055155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19935039.

The product of its (nonzero) digits is 506250000, while the sum is 65.

The spelling of 56665565055155 in words is "fifty-six trillion, six hundred sixty-five billion, five hundred sixty-five million, fifty-five thousand, one hundred fifty-five".