77967315894 has 32 divisors (see below), whose sum is σ = 170436026880. Its totient is φ = 23631882912.

The previous prime is 77967315851. The next prime is 77967315901. The reversal of 77967315894 is 49851376977.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7454334 + ... + 7464785.

It is an arithmetic number, because the mean of its divisors is an integer number (5326125840).

Almost surely, 2^77967315894 is an apocalyptic number.

77967315894 is an abundant number, since it is smaller than the sum of its proper divisors (92468710986).

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

77967315894 is a wasteful number, since it uses less digits than its factorization.

77967315894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14919204.

The product of its digits is 80015040, while the sum is 66.

The spelling of 77967315894 in words is "seventy-seven billion, nine hundred sixty-seven million, three hundred fifteen thousand, eight hundred ninety-four".