77693923260 has 72 divisors (see below), whose sum is σ = 249534610416. Its totient is φ = 19499650560.

The previous prime is 77693923247. The next prime is 77693923271. The reversal of 77693923260 is 6232939677.

It is a junction number, because it is equal to n+sod(n) for n = 77693923197 and 77693923206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12692026 + ... + 12698145.

It is an arithmetic number, because the mean of its divisors is an integer number (3465758478).

Almost surely, 2^77693923260 is an apocalyptic number.

It is an amenable number.

77693923260 is an abundant number, since it is smaller than the sum of its proper divisors (171840687156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77693923260 is a wasteful number, since it uses less digits than its factorization.

77693923260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25390203 (or 25390198 counting only the distinct ones).

The product of its (nonzero) digits is 5143824, while the sum is 54.

The spelling of 77693923260 in words is "seventy-seven billion, six hundred ninety-three million, nine hundred twenty-three thousand, two hundred sixty".