19776482055 has 48 divisors (see below), whose sum is σ = 38406255264. Its totient is φ = 9329437440.

The previous prime is 19776482039. The next prime is 19776482087. The reversal of 19776482055 is 55028467791.

19776482055 is a `hidden beast` number, since 1 + 97 + 76 + 482 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 19776482055 - 2⁴ = 19776482039 is a prime.

It is a super-2 number, since 2×19776482055² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19776481992 and 19776482010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 521584 + ... + 558213.

It is an arithmetic number, because the mean of its divisors is an integer number (800130318).

Almost surely, 2^19776482055 is an apocalyptic number.

19776482055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19776482055 is a deficient number, since it is larger than the sum of its proper divisors (18629773209).

19776482055 is a wasteful number, since it uses less digits than its factorization.

19776482055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079856 (or 1079853 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 19776482055 in words is "nineteen billion, seven hundred seventy-six million, four hundred eighty-two thousand, fifty-five".