77611251532 has 6 divisors (see below), whose sum is σ = 135819690188. Its totient is φ = 38805625764.

The previous prime is 77611251463. The next prime is 77611251587. The reversal of 77611251532 is 23515211677.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9701406438 + ... + 9701406445.

Almost surely, 2^77611251532 is an apocalyptic number.

It is an amenable number.

77611251532 is a deficient number, since it is larger than the sum of its proper divisors (58208438656).

77611251532 is a wasteful number, since it uses less digits than its factorization.

77611251532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19402812887 (or 19402812885 counting only the distinct ones).

The product of its digits is 88200, while the sum is 40.

The spelling of 77611251532 in words is "seventy-seven billion, six hundred eleven million, two hundred fifty-one thousand, five hundred thirty-two".