551777130656 has 12 divisors (see below), whose sum is σ = 1086311226042. Its totient is φ = 275888565312.

The previous prime is 551777130623. The next prime is 551777130679. The reversal of 551777130656 is 656031777155.

It can be written as a sum of positive squares in only one way, i.e., 378791011600 + 172986119056 = 615460^2 + 415916^2 .

It is a junction number, because it is equal to n+sod(n) for n = 551777130598 and 551777130607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8621517635 + ... + 8621517698.

Almost surely, 2^551777130656 is an apocalyptic number.

It is an amenable number.

551777130656 is a deficient number, since it is larger than the sum of its proper divisors (534534095386).

551777130656 is a wasteful number, since it uses less digits than its factorization.

551777130656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17243035343 (or 17243035335 counting only the distinct ones).

The product of its (nonzero) digits is 4630500, while the sum is 53.

The spelling of 551777130656 in words is "five hundred fifty-one billion, seven hundred seventy-seven million, one hundred thirty thousand, six hundred fifty-six".