77393239377 has 8 divisors (see below), whose sum is σ = 103349014464. Its totient is φ = 51516478608.

The previous prime is 77393239309. The next prime is 77393239393.

77393239377 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77393239377 - 2⁷ = 77393239249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77393239377.

It is not an unprimeable number, because it can be changed into a prime (77393239307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19751293 + ... + 19755210.

It is an arithmetic number, because the mean of its divisors is an integer number (12918626808).

Almost surely, 2^77393239377 is an apocalyptic number.

It is an amenable number.

77393239377 is a deficient number, since it is larger than the sum of its proper divisors (25955775087).

77393239377 is a wasteful number, since it uses less digits than its factorization.

77393239377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39507159.

The product of its digits is 31505922, while the sum is 60.

The spelling of 77393239377 in words is "seventy-seven billion, three hundred ninety-three million, two hundred thirty-nine thousand, three hundred seventy-seven".