77562736136 has 16 divisors (see below), whose sum is σ = 145536072300. Its totient is φ = 38753116864.

The previous prime is 77562736109. The next prime is 77562736169. The reversal of 77562736136 is 63163726577.

It can be written as a sum of positive squares in 2 ways, for example, as 71392633636 + 6170102500 = 267194^2 + 78550^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3519731 + ... + 3541698.

Almost surely, 2^77562736136 is an apocalyptic number.

It is an amenable number.

77562736136 is a deficient number, since it is larger than the sum of its proper divisors (67973336164).

77562736136 is a wasteful number, since it uses less digits than its factorization.

77562736136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7062808 (or 7062804 counting only the distinct ones).

The product of its digits is 6667920, while the sum is 53.

The spelling of 77562736136 in words is "seventy-seven billion, five hundred sixty-two million, seven hundred thirty-six thousand, one hundred thirty-six".