721712032604416 has 72 divisors (see below), whose sum is σ = 1669594385579904. Its totient is φ = 304948746117120.

The previous prime is 721712032604357. The next prime is 721712032604443. The reversal of 721712032604416 is 614406230217127.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2836077625 + ... + 2836332088.

It is an arithmetic number, because the mean of its divisors is an integer number (23188810910832).

Almost surely, 2^{721712032604416} is an apocalyptic number.

It is an amenable number.

721712032604416 is an abundant number, since it is smaller than the sum of its proper divisors (947882352975488).

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

721712032604416 is an equidigital number, since it uses as much as digits as its factorization.

721712032604416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5672409807 (or 5672409793 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 721712032604416 in words is "seven hundred twenty-one trillion, seven hundred twelve billion, thirty-two million, six hundred four thousand, four hundred sixteen".