77077701668 has 24 divisors (see below), whose sum is σ = 147443268000. Its totient is φ = 34965097920.

The previous prime is 77077701643. The next prime is 77077701689. The reversal of 77077701668 is 86610777077.

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, 1733321 + ... + 1777232.

It is an arithmetic number, because the mean of its divisors is an integer number (6143469500).

Almost surely, 2^77077701668 is an apocalyptic number.

It is an amenable number.

77077701668 is a deficient number, since it is larger than the sum of its proper divisors (70365566332).

77077701668 is a wasteful number, since it uses less digits than its factorization.

77077701668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511067 (or 3511065 counting only the distinct ones).

The product of its (nonzero) digits is 4840416, while the sum is 56.

The spelling of 77077701668 in words is "seventy-seven billion, seventy-seven million, seven hundred one thousand, six hundred sixty-eight".