726387292631 has 32 divisors (see below), whose sum is σ = 976998038016. Its totient is φ = 521560944000.

The previous prime is 726387292567. The next prime is 726387292753. The reversal of 726387292631 is 136292783627.

It is a cyclic number.

It is not a de Polignac number, because 726387292631 - 2⁶ = 726387292567 is a prime.

It is a super-2 number, since 2×726387292631² (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 (726384292631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63860 + ... + 1207001.

It is an arithmetic number, because the mean of its divisors is an integer number (30531188688).

Almost surely, 2^726387292631 is an apocalyptic number.

726387292631 is a deficient number, since it is larger than the sum of its proper divisors (250610745385).

726387292631 is a wasteful number, since it uses less digits than its factorization.

726387292631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271463.

The product of its digits is 9144576, while the sum is 56.

The spelling of 726387292631 in words is "seven hundred twenty-six billion, three hundred eighty-seven million, two hundred ninety-two thousand, six hundred thirty-one".