55156865154 has 32 divisors (see below), whose sum is σ = 113025144960. Its totient is φ = 17933884800.

The previous prime is 55156865129. The next prime is 55156865161. The reversal of 55156865154 is 45156865155.

It is a junction number, because it is equal to n+sod(n) for n = 55156865097 and 55156865106.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1562107 + ... + 1597025.

It is an arithmetic number, because the mean of its divisors is an integer number (3532035780).

Almost surely, 2^55156865154 is an apocalyptic number.

55156865154 is an abundant number, since it is smaller than the sum of its proper divisors (57868279806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55156865154 is a wasteful number, since it uses less digits than its factorization.

55156865154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41386.

The product of its digits is 3600000, while the sum is 51.

Subtracting from 55156865154 its reverse (45156865155), we obtain a palindrome (9999999999).

The spelling of 55156865154 in words is "fifty-five billion, one hundred fifty-six million, eight hundred sixty-five thousand, one hundred fifty-four".