55133111133155 has 24 divisors (see below), whose sum is σ = 72721604525136. Its totient is φ = 40096490892480.

The previous prime is 55133111133091. The next prime is 55133111133203.

55133111133155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55133111133155 - 2⁶ = 55133111133091 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98624864 + ... + 99182306.

It is an arithmetic number, because the mean of its divisors is an integer number (3030066855214).

Almost surely, 2^{55133111133155} is an apocalyptic number.

55133111133155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55133111133155 is a deficient number, since it is larger than the sum of its proper divisors (17588493391981).

55133111133155 is a wasteful number, since it uses less digits than its factorization.

55133111133155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720947 (or 720936 counting only the distinct ones).

The product of its digits is 50625, while the sum is 38.

It can be divided in two parts, 5513311 and 1133155, that added together give a palindrome (6646466).

The spelling of 55133111133155 in words is "fifty-five trillion, one hundred thirty-three billion, one hundred eleven million, one hundred thirty-three thousand, one hundred fifty-five".