55655822978 has 18 divisors (see below), whose sum is σ = 97117807203. Its totient is φ = 23851494660.

The previous prime is 55655822953. The next prime is 55655823007. The reversal of 55655822978 is 87922855655.

55655822978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 27827911489 + 27827911489 = 166817^2 + 166817^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=166817.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55655822978.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2323523 + ... + 2347353.

Almost surely, 2^55655822978 is an apocalyptic number.

55655822978 is a deficient number, since it is larger than the sum of its proper divisors (41461984225).

55655822978 is an frugal number, since it uses more digits than its factorization.

55655822978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47678 (or 23840 counting only the distinct ones).

The product of its digits is 60480000, while the sum is 62.

The spelling of 55655822978 in words is "fifty-five billion, six hundred fifty-five million, eight hundred twenty-two thousand, nine hundred seventy-eight".