726411773231 has 4 divisors (see below), whose sum is σ = 726440678112. Its totient is φ = 726382868352.

The previous prime is 726411773159. The next prime is 726411773251. The reversal of 726411773231 is 132377114627.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 726411773231 - 2³⁴ = 709231904047 is a prime.

It is a super-2 number, since 2×726411773231² (a number of 25 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 (726411773251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14414711 + ... + 14465016.

It is an arithmetic number, because the mean of its divisors is an integer number (181610169528).

Almost surely, 2^726411773231 is an apocalyptic number.

726411773231 is a deficient number, since it is larger than the sum of its proper divisors (28904881).

726411773231 is a wasteful number, since it uses less digits than its factorization.

726411773231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28904880.

The product of its digits is 296352, while the sum is 44.

Adding to 726411773231 its reverse (132377114627), we get a palindrome (858788887858).

The spelling of 726411773231 in words is "seven hundred twenty-six billion, four hundred eleven million, seven hundred seventy-three thousand, two hundred thirty-one".