19776482056 has 8 divisors (see below), whose sum is σ = 37080903870. Its totient is φ = 9888241024.

The previous prime is 19776482039. The next prime is 19776482087. The reversal of 19776482056 is 65028467791.

It can be written as a sum of positive squares in only one way, i.e., 18711504100 + 1064977956 = 136790^2 + 32634^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×19776482056² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19776481988 and 19776482006.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1236030121 + ... + 1236030136.

Almost surely, 2^19776482056 is an apocalyptic number.

It is an amenable number.

19776482056 is a deficient number, since it is larger than the sum of its proper divisors (17304421814).

19776482056 is a wasteful number, since it uses less digits than its factorization.

19776482056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472060263 (or 2472060259 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 19776482056 in words is "nineteen billion, seven hundred seventy-six million, four hundred eighty-two thousand, fifty-six".