77616605064 has 32 divisors (see below), whose sum is σ = 196937658720. Its totient is φ = 25486048896.

The previous prime is 77616605057. The next prime is 77616605081. The reversal of 77616605064 is 46050661677.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24132909 + ... + 24136124.

It is an arithmetic number, because the mean of its divisors is an integer number (6154301835).

Almost surely, 2^77616605064 is an apocalyptic number.

It is an amenable number.

77616605064 is an abundant number, since it is smaller than the sum of its proper divisors (119321053656).

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

77616605064 is a wasteful number, since it uses less digits than its factorization.

77616605064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48269109 (or 48269105 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 77616605064 in words is "seventy-seven billion, six hundred sixteen million, six hundred five thousand, sixty-four".