721325363523127 has 12 divisors (see below), whose sum is σ = 792895624709328. Its totient is φ = 655722324725600.

The previous prime is 721325363523109. The next prime is 721325363523143.

721325363523127 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-721325363523127 is a prime.

It is a super-2 number, since 2×721325363523127² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721322363523127) by changing a digit.

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, 124453699 + ... + 130120612.

It is an arithmetic number, because the mean of its divisors is an integer number (66074635392444).

Almost surely, 2^{721325363523127} is an apocalyptic number.

721325363523127 is a deficient number, since it is larger than the sum of its proper divisors (71570261186201).

721325363523127 is a wasteful number, since it uses less digits than its factorization.

721325363523127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254597750 (or 254597739 counting only the distinct ones).

The product of its digits is 9525600, while the sum is 52.

The spelling of 721325363523127 in words is "seven hundred twenty-one trillion, three hundred twenty-five billion, three hundred sixty-three million, five hundred twenty-three thousand, one hundred twenty-seven".