77964847496 has 32 divisors (see below), whose sum is σ = 148005174240. Its totient is φ = 38497181568.

The previous prime is 77964847451. The next prime is 77964847523. The reversal of 77964847496 is 69474846977.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1715255 + ... + 1760121.

It is an arithmetic number, because the mean of its divisors is an integer number (4625161695).

Almost surely, 2^77964847496 is an apocalyptic number.

It is an amenable number.

77964847496 is a deficient number, since it is larger than the sum of its proper divisors (70040326744).

77964847496 is a wasteful number, since it uses less digits than its factorization.

77964847496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47573 (or 47569 counting only the distinct ones).

The product of its digits is 512096256, while the sum is 71.

The spelling of 77964847496 in words is "seventy-seven billion, nine hundred sixty-four million, eight hundred forty-seven thousand, four hundred ninety-six".