721747530716675 has 12 divisors (see below), whose sum is σ = 896008808823240. Its totient is φ = 576725849905920.

The previous prime is 721747530716669. The next prime is 721747530716701. The reversal of 721747530716675 is 576617035747127.

It is not a de Polignac number, because 721747530716675 - 2⁴ = 721747530716659 is a prime.

It is a hoax number, since the sum of its digits (68) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 16804344782 + ... + 16804387731.

It is an arithmetic number, because the mean of its divisors is an integer number (74667400735270).

Almost surely, 2^{721747530716675} is an apocalyptic number.

721747530716675 is a deficient number, since it is larger than the sum of its proper divisors (174261278106565).

721747530716675 is a wasteful number, since it uses less digits than its factorization.

721747530716675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33608733382 (or 33608733377 counting only the distinct ones).

The product of its (nonzero) digits is 363031200, while the sum is 68.

The spelling of 721747530716675 in words is "seven hundred twenty-one trillion, seven hundred forty-seven billion, five hundred thirty million, seven hundred sixteen thousand, six hundred seventy-five".