55331213355 has 72 divisors (see below), whose sum is σ = 105539432544. Its totient is φ = 26796591360.

The previous prime is 55331213309. The next prime is 55331213387.

55331213355 is a `hidden beast` number, since 5 + 5 + 3 + 312 + 1 + 335 + 5 = 666.

55331213355 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55331213355 - 2¹⁹ = 55330689067 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5183754 + ... + 5194416.

It is an arithmetic number, because the mean of its divisors is an integer number (1465825452).

Almost surely, 2^55331213355 is an apocalyptic number.

55331213355 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55331213355 is a deficient number, since it is larger than the sum of its proper divisors (50208219189).

55331213355 is a wasteful number, since it uses less digits than its factorization.

55331213355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11649 (or 11635 counting only the distinct ones).

The product of its digits is 101250, while the sum is 36.

The spelling of 55331213355 in words is "fifty-five billion, three hundred thirty-one million, two hundred thirteen thousand, three hundred fifty-five".