8742977520656 has 10 divisors (see below), whose sum is σ = 16939518946302. Its totient is φ = 4371488760320.

The previous prime is 8742977520649. The next prime is 8742977520671. The reversal of 8742977520656 is 6560257792478.

It can be written as a sum of positive squares in only one way, i.e., 6332671590400 + 2410305930256 = 2516480^2 + 1552516^2 .

It is a super-2 number, since 2×8742977520656² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273218047505 + ... + 273218047536.

Almost surely, 2^{8742977520656} is an apocalyptic number.

It is an amenable number.

8742977520656 is a deficient number, since it is larger than the sum of its proper divisors (8196541425646).

8742977520656 is a wasteful number, since it uses less digits than its factorization.

8742977520656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546436095049 (or 546436095043 counting only the distinct ones).

The product of its (nonzero) digits is 355622400, while the sum is 68.

The spelling of 8742977520656 in words is "eight trillion, seven hundred forty-two billion, nine hundred seventy-seven million, five hundred twenty thousand, six hundred fifty-six".