55811776984 has 16 divisors (see below), whose sum is σ = 105907891320. Its totient is φ = 27569672640.

The previous prime is 55811776961. The next prime is 55811776987. The reversal of 55811776984 is 48967711855.

55811776984 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 2×55811776984² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55811776987) 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, 42026277 + ... + 42027604.

Almost surely, 2^55811776984 is an apocalyptic number.

It is an amenable number.

55811776984 is a deficient number, since it is larger than the sum of its proper divisors (50096114336).

55811776984 is a wasteful number, since it uses less digits than its factorization.

55811776984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84053970 (or 84053966 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 61.

The spelling of 55811776984 in words is "fifty-five billion, eight hundred eleven million, seven hundred seventy-six thousand, nine hundred eighty-four".