721674474376460 has 48 divisors (see below), whose sum is σ = 1655799401329920. Its totient is φ = 262028861384640.

The previous prime is 721674474376439. The next prime is 721674474376507. The reversal of 721674474376460 is 64673474476127.

It is a super-2 number, since 2×721674474376460² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2488730984 + ... + 2489020943.

It is an arithmetic number, because the mean of its divisors is an integer number (34495820861040).

Almost surely, 2^{721674474376460} is an apocalyptic number.

It is an amenable number.

721674474376460 is an abundant number, since it is smaller than the sum of its proper divisors (934124926953460).

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

721674474376460 is a wasteful number, since it uses less digits than its factorization.

721674474376460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4977752606 (or 4977752604 counting only the distinct ones).

The product of its (nonzero) digits is 796594176, while the sum is 68.

The spelling of 721674474376460 in words is "seven hundred twenty-one trillion, six hundred seventy-four billion, four hundred seventy-four million, three hundred seventy-six thousand, four hundred sixty".