77676636336 has 80 divisors (see below), whose sum is σ = 220177845216. Its totient is φ = 23449540608.

The previous prime is 77676636281. The next prime is 77676636337. The reversal of 77676636336 is 63363667677.

It is a self number, because there is not a number n which added to its sum of digits gives 77676636336.

It is not an unprimeable number, because it can be changed into a prime (77676636337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1141285 + ... + 1207428.

Almost surely, 2^77676636336 is an apocalyptic number.

It is an amenable number.

77676636336 is an abundant number, since it is smaller than the sum of its proper divisors (142501208880).

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

77676636336 is a wasteful number, since it uses less digits than its factorization.

77676636336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348790 (or 2348784 counting only the distinct ones).

The product of its digits is 72013536, while the sum is 60.

The spelling of 77676636336 in words is "seventy-seven billion, six hundred seventy-six million, six hundred thirty-six thousand, three hundred thirty-six".