726899009279 has 4 divisors (see below), whose sum is σ = 726901535184. Its totient is φ = 726896483376.

The previous prime is 726899009251. The next prime is 726899009281. The reversal of 726899009279 is 972900998627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972900998627 = 1621 ⋅600185687.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726899009279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726899009209) 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, 766142 + ... + 1428555.

It is an arithmetic number, because the mean of its divisors is an integer number (181725383796).

Almost surely, 2^726899009279 is an apocalyptic number.

726899009279 is a deficient number, since it is larger than the sum of its proper divisors (2525905).

726899009279 is a wasteful number, since it uses less digits than its factorization.

726899009279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525904.

The product of its (nonzero) digits is 61725888, while the sum is 68.

The spelling of 726899009279 in words is "seven hundred twenty-six billion, eight hundred ninety-nine million, nine thousand, two hundred seventy-nine".