77882731376 has 20 divisors (see below), whose sum is σ = 157458566352. Its totient is φ = 37248262656.

The previous prime is 77882731321. The next prime is 77882731403. The reversal of 77882731376 is 67313728877.

It is a happy number.

It is a congruent number.

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, 105818561 + ... + 105819296.

Almost surely, 2^77882731376 is an apocalyptic number.

It is an amenable number.

77882731376 is an abundant number, since it is smaller than the sum of its proper divisors (79575834976).

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

77882731376 is a wasteful number, since it uses less digits than its factorization.

77882731376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211637888 (or 211637882 counting only the distinct ones).

The product of its digits is 16595712, while the sum is 59.

The spelling of 77882731376 in words is "seventy-seven billion, eight hundred eighty-two million, seven hundred thirty-one thousand, three hundred seventy-six".