55156322365155 has 32 divisors (see below), whose sum is σ = 106969837317120. Its totient is φ = 26742459327840.

The previous prime is 55156322365153. The next prime is 55156322365159.

55156322365155 is a `hidden beast` number, since 5 + 5 + 1 + 563 + 2 + 2 + 3 + 65 + 15 + 5 = 666.

55156322365155 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55156322365155 - 2¹ = 55156322365153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55156322365153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18571150827 + ... + 18571153796.

It is an arithmetic number, because the mean of its divisors is an integer number (3342807416160).

Almost surely, 2^{55156322365155} is an apocalyptic number.

55156322365155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55156322365155 is a deficient number, since it is larger than the sum of its proper divisors (51813514951965).

55156322365155 is a wasteful number, since it uses less digits than its factorization.

55156322365155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37142304648 (or 37142304642 counting only the distinct ones).

The product of its digits is 20250000, while the sum is 54.

The spelling of 55156322365155 in words is "fifty-five trillion, one hundred fifty-six billion, three hundred twenty-two million, three hundred sixty-five thousand, one hundred fifty-five".