77113957636 has 27 divisors (see below), whose sum is σ = 138203570421. Its totient is φ = 37648641744.

The previous prime is 77113957633. The next prime is 77113957637. The reversal of 77113957636 is 63675931177.

The square root of 77113957636 is 277694.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 23197117636 + 53916840000 = 152306^2 + 232200^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77113957633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 23880070 + ... + 23883298.

Almost surely, 2^77113957636 is an apocalyptic number.

77113957636 is the 277694-th square number.

It is an amenable number.

77113957636 is a deficient number, since it is larger than the sum of its proper divisors (61089612785).

77113957636 is an frugal number, since it uses more digits than its factorization.

77113957636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6548 (or 3274 counting only the distinct ones).

The product of its digits is 5000940, while the sum is 55.

The spelling of 77113957636 in words is "seventy-seven billion, one hundred thirteen million, nine hundred fifty-seven thousand, six hundred thirty-six".