55807376617 has 4 divisors (see below), whose sum is σ = 58233784320. Its totient is φ = 53380968916.

The previous prime is 55807376591. The next prime is 55807376623. The reversal of 55807376617 is 71667370855.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 55807376617 - 2²⁷ = 55673158889 is a prime.

It is a super-2 number, since 2×55807376617² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55807376657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213203817 + ... + 1213203862.

It is an arithmetic number, because the mean of its divisors is an integer number (14558446080).

Almost surely, 2^55807376617 is an apocalyptic number.

It is an amenable number.

55807376617 is a deficient number, since it is larger than the sum of its proper divisors (2426407703).

55807376617 is a wasteful number, since it uses less digits than its factorization.

55807376617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426407702.

The product of its (nonzero) digits is 7408800, while the sum is 55.

The spelling of 55807376617 in words is "fifty-five billion, eight hundred seven million, three hundred seventy-six thousand, six hundred seventeen".