77766112472 has 24 divisors (see below), whose sum is σ = 153492534300. Its totient is φ = 36834951024.

The previous prime is 77766112469. The next prime is 77766112481. The reversal of 77766112472 is 27421166777.

It is a self number, because there is not a number n which added to its sum of digits gives 77766112472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3426779 + ... + 3449397.

Almost surely, 2^77766112472 is an apocalyptic number.

It is an amenable number.

77766112472 is a deficient number, since it is larger than the sum of its proper divisors (75726421828).

77766112472 is an frugal number, since it uses more digits than its factorization.

77766112472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45263 (or 22640 counting only the distinct ones).

The product of its digits is 1382976, while the sum is 50.

The spelling of 77766112472 in words is "seventy-seven billion, seven hundred sixty-six million, one hundred twelve thousand, four hundred seventy-two".