55940817916 has 36 divisors (see below), whose sum is σ = 104289147648. Its totient is φ = 26250323968.

The previous prime is 55940817857. The next prime is 55940817941. The reversal of 55940817916 is 61971804955.

It is a happy number.

55940817916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55940817916² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339525 + ... + 476611.

It is an arithmetic number, because the mean of its divisors is an integer number (2896920768).

Almost surely, 2^55940817916 is an apocalyptic number.

It is an amenable number.

55940817916 is a deficient number, since it is larger than the sum of its proper divisors (48348329732).

55940817916 is a wasteful number, since it uses less digits than its factorization.

55940817916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137478 (or 137459 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 55.

The spelling of 55940817916 in words is "fifty-five billion, nine hundred forty million, eight hundred seventeen thousand, nine hundred sixteen".