721701408784324 has 12 divisors (see below), whose sum is σ = 1263218906331648. Its totient is φ = 360781721261000.

The previous prime is 721701408784319. The next prime is 721701408784327. The reversal of 721701408784324 is 423487804107127.

It is not an unprimeable number, because it can be changed into a prime (721701408784327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17245759252 + ... + 17245801099.

It is an arithmetic number, because the mean of its divisors is an integer number (105268242194304).

Almost surely, 2^{721701408784324} is an apocalyptic number.

It is an amenable number.

721701408784324 is a deficient number, since it is larger than the sum of its proper divisors (541517497547324).

721701408784324 is a wasteful number, since it uses less digits than its factorization.

721701408784324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34491565586 (or 34491565584 counting only the distinct ones).

The product of its (nonzero) digits is 16859136, while the sum is 58.

The spelling of 721701408784324 in words is "seven hundred twenty-one trillion, seven hundred one billion, four hundred eight million, seven hundred eighty-four thousand, three hundred twenty-four".