54976687864 has 64 divisors (see below), whose sum is σ = 121654794240. Its totient is φ = 22792510080.

The previous prime is 54976687823. The next prime is 54976687903. The reversal of 54976687864 is 46878667945.

It is a junction number, because it is equal to n+sod(n) for n = 54976687793 and 54976687802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6319902 + ... + 6328594.

It is an arithmetic number, because the mean of its divisors is an integer number (1900856160).

Almost surely, 2^54976687864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54976687864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60827397120).

54976687864 is an abundant number, since it is smaller than the sum of its proper divisors (66678106376).

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

54976687864 is a wasteful number, since it uses less digits than its factorization.

54976687864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12380 (or 12376 counting only the distinct ones).

The product of its digits is 487710720, while the sum is 70.

The spelling of 54976687864 in words is "fifty-four billion, nine hundred seventy-six million, six hundred eighty-seven thousand, eight hundred sixty-four".