55377989616 has 40 divisors (see below), whose sum is σ = 143701358080. Its totient is φ = 18376549056.

The previous prime is 55377989609. The next prime is 55377989633. The reversal of 55377989616 is 61698977355.

55377989616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2576086 + ... + 2597493.

It is an arithmetic number, because the mean of its divisors is an integer number (3592533952).

Almost surely, 2^55377989616 is an apocalyptic number.

It is an amenable number.

55377989616 is an abundant number, since it is smaller than the sum of its proper divisors (88323368464).

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

55377989616 is a wasteful number, since it uses less digits than its factorization.

55377989616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5173813 (or 5173807 counting only the distinct ones).

The product of its digits is 85730400, while the sum is 66.

The spelling of 55377989616 in words is "fifty-five billion, three hundred seventy-seven million, nine hundred eighty-nine thousand, six hundred sixteen".