77690734500 has 48 divisors (see below), whose sum is σ = 226235423232. Its totient is φ = 20717528800.

The previous prime is 77690734477. The next prime is 77690734531. The reversal of 77690734500 is 543709677.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 77690734500.

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 15 ways as a sum of consecutive naturals, for example, 25895412 + ... + 25898411.

It is an arithmetic number, because the mean of its divisors is an integer number (4713237984).

Almost surely, 2^77690734500 is an apocalyptic number.

It is an amenable number.

77690734500 is an abundant number, since it is smaller than the sum of its proper divisors (148544688732).

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

77690734500 is a wasteful number, since it uses less digits than its factorization.

77690734500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51793845 (or 51793833 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 48.

The spelling of 77690734500 in words is "seventy-seven billion, six hundred ninety million, seven hundred thirty-four thousand, five hundred".