77995620248 has 48 divisors (see below), whose sum is σ = 183204010080. Its totient is φ = 30855408192.

The previous prime is 77995620221. The next prime is 77995620251. The reversal of 77995620248 is 84202659977.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7647536 + ... + 7657727.

It is an arithmetic number, because the mean of its divisors is an integer number (3816750210).

Almost surely, 2^77995620248 is an apocalyptic number.

It is an amenable number.

77995620248 is an abundant number, since it is smaller than the sum of its proper divisors (105208389832).

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

77995620248 is a wasteful number, since it uses less digits than its factorization.

77995620248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15305296 (or 15305285 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 77995620248 in words is "seventy-seven billion, nine hundred ninety-five million, six hundred twenty thousand, two hundred forty-eight".