55820258613 has 24 divisors (see below), whose sum is σ = 93183105600. Its totient is φ = 31538890944.

The previous prime is 55820258581. The next prime is 55820258617. The reversal of 55820258613 is 31685202855.

55820258613 is a `hidden beast` number, since 5 + 5 + 8 + 2 + 0 + 25 + 8 + 613 = 666.

It is not a de Polignac number, because 55820258613 - 2⁵ = 55820258581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55820258617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4972123 + ... + 4983336.

It is an arithmetic number, because the mean of its divisors is an integer number (3882629400).

Almost surely, 2^55820258613 is an apocalyptic number.

It is an amenable number.

55820258613 is a deficient number, since it is larger than the sum of its proper divisors (37362846987).

55820258613 is a wasteful number, since it uses less digits than its factorization.

55820258613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9955561 (or 9955558 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 55820258613 in words is "fifty-five billion, eight hundred twenty million, two hundred fifty-eight thousand, six hundred thirteen".