76721495762 has 18 divisors (see below), whose sum is σ = 116723813157. Its totient is φ = 37821156336.

The previous prime is 76721495707. The next prime is 76721495813. The reversal of 76721495762 is 26759412767.

It can be written as a sum of positive squares in 2 ways, for example, as 76368769801 + 352725961 = 276349^2 + 18781^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=195859.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76721495698 and 76721495707.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 28594073 + ... + 28596755.

Almost surely, 2^76721495762 is an apocalyptic number.

76721495762 is a deficient number, since it is larger than the sum of its proper divisors (40002317395).

76721495762 is an frugal number, since it uses more digits than its factorization.

76721495762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5514 (or 2758 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 56.

The spelling of 76721495762 in words is "seventy-six billion, seven hundred twenty-one million, four hundred ninety-five thousand, seven hundred sixty-two".