77565500612 has 12 divisors (see below), whose sum is σ = 136638565056. Its totient is φ = 38525910600.

The previous prime is 77565500609. The next prime is 77565500629. The reversal of 77565500612 is 21600556577.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 64209248 + ... + 64210455.

It is an arithmetic number, because the mean of its divisors is an integer number (11386547088).

Almost surely, 2^77565500612 is an apocalyptic number.

It is an amenable number.

77565500612 is a deficient number, since it is larger than the sum of its proper divisors (59073064444).

77565500612 is a wasteful number, since it uses less digits than its factorization.

77565500612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128419858 (or 128419856 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 44.

The spelling of 77565500612 in words is "seventy-seven billion, five hundred sixty-five million, five hundred thousand, six hundred twelve".