55130433658506 has 64 divisors (see below), whose sum is σ = 124066291507200. Its totient is φ = 18143691581808.

The previous prime is 55130433658477. The next prime is 55130433658523. The reversal of 55130433658506 is 60585633403155.

It is a happy number.

55130433658506 is a `hidden beast` number, since 5 + 5 + 1 + 30 + 43 + 3 + 65 + 8 + 506 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 173992635 + ... + 174309201.

It is an arithmetic number, because the mean of its divisors is an integer number (1938535804800).

Almost surely, 2^{55130433658506} is an apocalyptic number.

55130433658506 is an abundant number, since it is smaller than the sum of its proper divisors (68935857848694).

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

55130433658506 is a wasteful number, since it uses less digits than its factorization.

55130433658506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357480 (or 357474 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 54.

The spelling of 55130433658506 in words is "fifty-five trillion, one hundred thirty billion, four hundred thirty-three million, six hundred fifty-eight thousand, five hundred six".