55165515505150 has 96 divisors (see below), whose sum is σ = 108438207546240. Its totient is φ = 20845512145920.

The previous prime is 55165515505117. The next prime is 55165515505171. The reversal of 55165515505150 is 5150551556155.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55165515505094 and 55165515505103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 221840284 + ... + 222088816.

It is an arithmetic number, because the mean of its divisors is an integer number (1129564661940).

Almost surely, 2^{55165515505150} is an apocalyptic number.

55165515505150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55165515505150 is a deficient number, since it is larger than the sum of its proper divisors (53272692041090).

55165515505150 is a wasteful number, since it uses less digits than its factorization.

55165515505150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251878 (or 251873 counting only the distinct ones).

The product of its (nonzero) digits is 2343750, while the sum is 49.

The spelling of 55165515505150 in words is "fifty-five trillion, one hundred sixty-five billion, five hundred fifteen million, five hundred five thousand, one hundred fifty".