77497797632 has 22 divisors (see below), whose sum is σ = 154919915868. Its totient is φ = 38748898304.

The previous prime is 77497797623. The next prime is 77497797647. The reversal of 77497797632 is 23679779477.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37839698 + ... + 37841745.

Almost surely, 2^77497797632 is an apocalyptic number.

It is an amenable number.

77497797632 is a deficient number, since it is larger than the sum of its proper divisors (77422118236).

77497797632 is an equidigital number, since it uses as much as digits as its factorization.

77497797632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75681463 (or 75681445 counting only the distinct ones).

The product of its digits is 196036848, while the sum is 68.

The spelling of 77497797632 in words is "seventy-seven billion, four hundred ninety-seven million, seven hundred ninety-seven thousand, six hundred thirty-two".