77677637904 has 100 divisors (see below), whose sum is σ = 225887920720. Its totient is φ = 25769741760.

The previous prime is 77677637887. The next prime is 77677637929. The reversal of 77677637904 is 40973677677.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 131427 + ... + 415485.

Almost surely, 2^77677637904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77677637904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112943960360).

77677637904 is an abundant number, since it is smaller than the sum of its proper divisors (148210282816).

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

77677637904 is a wasteful number, since it uses less digits than its factorization.

77677637904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284290 (or 284275 counting only the distinct ones).

The product of its (nonzero) digits is 65345616, while the sum is 63.

The spelling of 77677637904 in words is "seventy-seven billion, six hundred seventy-seven million, six hundred thirty-seven thousand, nine hundred four".