726899009251 has 2 divisors, whose sum is σ = 726899009252. Its totient is φ = 726899009250.

The previous prime is 726899009209. The next prime is 726899009281. The reversal of 726899009251 is 152900998627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 726899009251 - 2⁹ = 726899008739 is a prime.

It is not a weakly prime, because it can be changed into another prime (726899009281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363449504625 + 363449504626.

It is an arithmetic number, because the mean of its divisors is an integer number (363449504626).

Almost surely, 2^726899009251 is an apocalyptic number.

726899009251 is a deficient number, since it is larger than the sum of its proper divisors (1).

726899009251 is an equidigital number, since it uses as much as digits as its factorization.

726899009251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 726899009251 in words is "seven hundred twenty-six billion, eight hundred ninety-nine million, nine thousand, two hundred fifty-one".