726144450987 has 32 divisors (see below), whose sum is σ = 1014662246400. Its totient is φ = 461047745312.

The previous prime is 726144450979. The next prime is 726144451001. The reversal of 726144450987 is 789054441627.

It is not a de Polignac number, because 726144450987 - 2³ = 726144450979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (726144450587) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16301848 + ... + 16346330.

It is an arithmetic number, because the mean of its divisors is an integer number (31708195200).

Almost surely, 2^726144450987 is an apocalyptic number.

726144450987 is a deficient number, since it is larger than the sum of its proper divisors (288517795413).

726144450987 is a wasteful number, since it uses less digits than its factorization.

726144450987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45527.

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 726144450987 in words is "seven hundred twenty-six billion, one hundred forty-four million, four hundred fifty thousand, nine hundred eighty-seven".