55744979976 has 128 divisors (see below), whose sum is σ = 177039878400. Its totient is φ = 15920686080.

The previous prime is 55744979959. The next prime is 55744979977. The reversal of 55744979976 is 67997944755.

55744979976 is a `hidden beast` number, since 5 + 574 + 49 + 7 + 9 + 9 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (55744979977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4713046 + ... + 4724858.

It is an arithmetic number, because the mean of its divisors is an integer number (1383124050).

Almost surely, 2^55744979976 is an apocalyptic number.

55744979976 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55744979976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88519939200).

55744979976 is an abundant number, since it is smaller than the sum of its proper divisors (121294898424).

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

55744979976 is a wasteful number, since it uses less digits than its factorization.

55744979976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14956 (or 14946 counting only the distinct ones).

The product of its digits is 600112800, while the sum is 72.

The spelling of 55744979976 in words is "fifty-five billion, seven hundred forty-four million, nine hundred seventy-nine thousand, nine hundred seventy-six".