76721363406 has 40 divisors (see below), whose sum is σ = 176105692224. Its totient is φ = 24950034720.

The previous prime is 76721363377. The next prime is 76721363417. The reversal of 76721363406 is 60436312767.

76721363406 is a `hidden beast` number, since 7 + 6 + 7 + 2 + 1 + 3 + 634 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5768830 + ... + 5782113.

Almost surely, 2^76721363406 is an apocalyptic number.

76721363406 is an abundant number, since it is smaller than the sum of its proper divisors (99384328818).

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

76721363406 is a wasteful number, since it uses less digits than its factorization.

76721363406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11550998 (or 11550989 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The spelling of 76721363406 in words is "seventy-six billion, seven hundred twenty-one million, three hundred sixty-three thousand, four hundred six".