55054999980 has 36 divisors (see below), whose sum is σ = 167000167152. Its totient is φ = 14681333280.

The previous prime is 55054999949. The next prime is 55054999981. The reversal of 55054999980 is 8999945055.

55054999980 is a `hidden beast` number, since 5 + 5 + 0 + 549 + 9 + 9 + 9 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (55054999981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152930376 + ... + 152930735.

It is an arithmetic number, because the mean of its divisors is an integer number (4638893532).

Almost surely, 2^55054999980 is an apocalyptic number.

It is an amenable number.

55054999980 is an abundant number, since it is smaller than the sum of its proper divisors (111945167172).

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

55054999980 is a wasteful number, since it uses less digits than its factorization.

55054999980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305861126 (or 305861121 counting only the distinct ones).

The product of its (nonzero) digits is 26244000, while the sum is 63.

The spelling of 55054999980 in words is "fifty-five billion, fifty-four million, nine hundred ninety-nine thousand, nine hundred eighty".