54779888018 has 16 divisors (see below), whose sum is σ = 89354795544. Its totient is φ = 25082046720.

The previous prime is 54779887999. The next prime is 54779888041. The reversal of 54779888018 is 81088897745.

It can be written as a sum of positive squares in 4 ways, for example, as 52293170329 + 2486717689 = 228677^2 + 49867^2 .

It is a super-2 number, since 2×54779888018² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21771353 + ... + 21773868.

Almost surely, 2^54779888018 is an apocalyptic number.

54779888018 is a deficient number, since it is larger than the sum of its proper divisors (34574907526).

54779888018 is a wasteful number, since it uses less digits than its factorization.

54779888018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43545277.

The product of its (nonzero) digits is 36126720, while the sum is 65.

The spelling of 54779888018 in words is "fifty-four billion, seven hundred seventy-nine million, eight hundred eighty-eight thousand, eighteen".