721674474376400 has 120 divisors (see below), whose sum is σ = 1844513045377344. Its totient is φ = 270401586739200.

The previous prime is 721674474376321. The next prime is 721674474376411. The reversal of 721674474376400 is 4673474476127.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 250054772 + ... + 252924371.

Almost surely, 2^{721674474376400} is an apocalyptic number.

It is an amenable number.

721674474376400 is an abundant number, since it is smaller than the sum of its proper divisors (1122838571000944).

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

721674474376400 is a wasteful number, since it uses less digits than its factorization.

721674474376400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502979389 (or 502979378 counting only the distinct ones).

The product of its (nonzero) digits is 132765696, while the sum is 62.

The spelling of 721674474376400 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".