76721363450 has 24 divisors (see below), whose sum is σ = 142709420700. Its totient is φ = 30686892800.

The previous prime is 76721363429. The next prime is 76721363489. The reversal of 76721363450 is 5436312767.

It can be written as a sum of positive squares in 6 ways, for example, as 65157157081 + 11564206369 = 255259^2 + 107537^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1381826 + ... + 1436274.

Almost surely, 2^76721363450 is an apocalyptic number.

76721363450 is a deficient number, since it is larger than the sum of its proper divisors (65988057250).

76721363450 is a wasteful number, since it uses less digits than its factorization.

76721363450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82642 (or 82637 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 76721363450 in words is "seventy-six billion, seven hundred twenty-one million, three hundred sixty-three thousand, four hundred fifty".