77332515894 has 12 divisors (see below), whose sum is σ = 167553784476. Its totient is φ = 25777505292.

The previous prime is 77332515881. The next prime is 77332515901. The reversal of 77332515894 is 49851523377.

77332515894 is a `hidden beast` number, since 7 + 7 + 3 + 3 + 2 + 51 + 589 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 77332515894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2148125424 + ... + 2148125459.

It is an arithmetic number, because the mean of its divisors is an integer number (13962815373).

Almost surely, 2^77332515894 is an apocalyptic number.

77332515894 is an abundant number, since it is smaller than the sum of its proper divisors (90221268582).

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

77332515894 is a wasteful number, since it uses less digits than its factorization.

77332515894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296250891 (or 4296250888 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The spelling of 77332515894 in words is "seventy-seven billion, three hundred thirty-two million, five hundred fifteen thousand, eight hundred ninety-four".