55533122133555 has 32 divisors (see below), whose sum is σ = 97009797173760. Its totient is φ = 26903134369280.

The previous prime is 55533122133451. The next prime is 55533122133641.

55533122133555 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55533122133555 - 2³⁵ = 55498762395187 is a prime.

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, 137396070 + ... + 137799659.

It is an arithmetic number, because the mean of its divisors is an integer number (3031556161680).

Almost surely, 2^{55533122133555} is an apocalyptic number.

55533122133555 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55533122133555 is a deficient number, since it is larger than the sum of its proper divisors (41476675040205).

55533122133555 is a wasteful number, since it uses less digits than its factorization.

55533122133555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275196971.

The product of its digits is 5062500, while the sum is 48.

It can be divided in two parts, 5553312 and 2133555, that added together give a palindrome (7686867).

The spelling of 55533122133555 in words is "fifty-five trillion, five hundred thirty-three billion, one hundred twenty-two million, one hundred thirty-three thousand, five hundred fifty-five".