726640251307513 has 8 divisors (see below), whose sum is σ = 764896611758400. Its totient is φ = 688385104526448.

The previous prime is 726640251307507. The next prime is 726640251307519. The reversal of 726640251307513 is 315703152046627.

It is an interprime number because it is at equal distance from previous prime (726640251307507) and next prime (726640251307519).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 726640251307513 - 2¹³ = 726640251299321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726640251307519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302188381 + ... + 304583482.

It is an arithmetic number, because the mean of its divisors is an integer number (95612076469800).

Almost surely, 2^{726640251307513} is an apocalyptic number.

It is an amenable number.

726640251307513 is a deficient number, since it is larger than the sum of its proper divisors (38256360450887).

726640251307513 is a wasteful number, since it uses less digits than its factorization.

726640251307513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606834911.

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 726640251307513 in words is "seven hundred twenty-six trillion, six hundred forty billion, two hundred fifty-one million, three hundred seven thousand, five hundred thirteen".