726640251307512 has 32 divisors (see below), whose sum is σ = 1816638940665600. Its totient is φ = 242208308782944.

The previous prime is 726640251307507. The next prime is 726640251307519. The reversal of 726640251307512 is 215703152046627.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318108208 + ... + 320384319.

It is an arithmetic number, because the mean of its divisors is an integer number (56769966895800).

Almost surely, 2^{726640251307512} is an apocalyptic number.

It is an amenable number.

726640251307512 is an abundant number, since it is smaller than the sum of its proper divisors (1089998689358088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

726640251307512 is a wasteful number, since it uses less digits than its factorization.

726640251307512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638539955 (or 638539951 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 726640251307512 in words is "seven hundred twenty-six trillion, six hundred forty billion, two hundred fifty-one million, three hundred seven thousand, five hundred twelve".