77634367688 has 16 divisors (see below), whose sum is σ = 153225726000. Its totient is φ = 36774174096.

The previous prime is 77634367649. The next prime is 77634367747. The reversal of 77634367688 is 88676343677.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255376058 + ... + 255376361.

It is an arithmetic number, because the mean of its divisors is an integer number (9576607875).

Almost surely, 2^77634367688 is an apocalyptic number.

It is an amenable number.

77634367688 is a deficient number, since it is larger than the sum of its proper divisors (75591358312).

77634367688 is a wasteful number, since it uses less digits than its factorization.

77634367688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510752444 (or 510752440 counting only the distinct ones).

The product of its digits is 170698752, while the sum is 65.

The spelling of 77634367688 in words is "seventy-seven billion, six hundred thirty-four million, three hundred sixty-seven thousand, six hundred eighty-eight".