77623399488 has 28 divisors (see below), whose sum is σ = 205378578320. Its totient is φ = 25874466432.

The previous prime is 77623399481. The next prime is 77623399517. The reversal of 77623399488 is 88499332677.

It is not an unprimeable number, because it can be changed into a prime (77623399481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202144078 + ... + 202144461.

Almost surely, 2^77623399488 is an apocalyptic number.

It is an amenable number.

77623399488 is an abundant number, since it is smaller than the sum of its proper divisors (127755178832).

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

77623399488 is a wasteful number, since it uses less digits than its factorization.

77623399488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404288554 (or 404288544 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 66.

The spelling of 77623399488 in words is "seventy-seven billion, six hundred twenty-three million, three hundred ninety-nine thousand, four hundred eighty-eight".