55565977956555 has 64 divisors (see below), whose sum is σ = 99612119287296. Its totient is φ = 26212170240000.

The previous prime is 55565977956553. The next prime is 55565977956563.

55565977956555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55565977956555 - 2¹ = 55565977956553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55565977956553) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 243115080 + ... + 243343530.

It is an arithmetic number, because the mean of its divisors is an integer number (1556439363864).

Almost surely, 2^{55565977956555} is an apocalyptic number.

55565977956555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55565977956555 is a deficient number, since it is larger than the sum of its proper divisors (44046141330741).

55565977956555 is a wasteful number, since it uses less digits than its factorization.

55565977956555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268348.

The product of its digits is 55814062500, while the sum is 84.

The spelling of 55565977956555 in words is "fifty-five trillion, five hundred sixty-five billion, nine hundred seventy-seven million, nine hundred fifty-six thousand, five hundred fifty-five".