77860344460 has 24 divisors (see below), whose sum is σ = 163568051136. Its totient is φ = 31132456320.

The previous prime is 77860344449. The next prime is 77860344479. The reversal of 77860344460 is 6444306877.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675337 + ... + 782176.

It is an arithmetic number, because the mean of its divisors is an integer number (6815335464).

Almost surely, 2^77860344460 is an apocalyptic number.

It is an amenable number.

77860344460 is an abundant number, since it is smaller than the sum of its proper divisors (85707706676).

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

77860344460 is a wasteful number, since it uses less digits than its factorization.

77860344460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460193 (or 1460191 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 49.

The spelling of 77860344460 in words is "seventy-seven billion, eight hundred sixty million, three hundred forty-four thousand, four hundred sixty".