726739937631 has 24 divisors (see below), whose sum is σ = 1050940101744. Its totient is φ = 483937597440.

The previous prime is 726739937611. The next prime is 726739937633. The reversal of 726739937631 is 136739937627.

It is not a de Polignac number, because 726739937631 - 2⁷ = 726739937503 is a prime.

It is a super-2 number, since 2×726739937631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726739937633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36618271 + ... + 36638111.

It is an arithmetic number, because the mean of its divisors is an integer number (43789170906).

Almost surely, 2^726739937631 is an apocalyptic number.

726739937631 is a deficient number, since it is larger than the sum of its proper divisors (324200164113).

726739937631 is a wasteful number, since it uses less digits than its factorization.

726739937631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24311 (or 24308 counting only the distinct ones).

The product of its digits is 54010152, while the sum is 63.

The spelling of 726739937631 in words is "seven hundred twenty-six billion, seven hundred thirty-nine million, nine hundred thirty-seven thousand, six hundred thirty-one".