55859937816 has 16 divisors (see below), whose sum is σ = 139649844600. Its totient is φ = 18619979264.

The previous prime is 55859937811. The next prime is 55859937841. The reversal of 55859937816 is 61873995855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55859937811) 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, 1163748681 + ... + 1163748728.

Almost surely, 2^55859937816 is an apocalyptic number.

It is an amenable number.

55859937816 is an abundant number, since it is smaller than the sum of its proper divisors (83789906784).

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

55859937816 is a wasteful number, since it uses less digits than its factorization.

55859937816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327497418 (or 2327497414 counting only the distinct ones).

The product of its digits is 81648000, while the sum is 66.

The spelling of 55859937816 in words is "fifty-five billion, eight hundred fifty-nine million, nine hundred thirty-seven thousand, eight hundred sixteen".