76861644124 has 12 divisors (see below), whose sum is σ = 134515968048. Its totient is φ = 38428510400.

The previous prime is 76861644107. The next prime is 76861644203. The reversal of 76861644124 is 42144616867.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501997 + ... + 636964.

It is an arithmetic number, because the mean of its divisors is an integer number (11209664004).

Almost surely, 2^76861644124 is an apocalyptic number.

It is an amenable number.

76861644124 is a deficient number, since it is larger than the sum of its proper divisors (57654323924).

76861644124 is a wasteful number, since it uses less digits than its factorization.

76861644124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155836 (or 1155834 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The spelling of 76861644124 in words is "seventy-six billion, eight hundred sixty-one million, six hundred forty-four thousand, one hundred twenty-four".