9572721012659 has 8 divisors (see below), whose sum is σ = 10973304711168. Its totient is φ = 8180400345480.

The previous prime is 9572721012649. The next prime is 9572721012671. The reversal of 9572721012659 is 9562101272759.

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 9572721012659 - 2¹⁶ = 9572720947123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9572721012649) 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, 2065755347 + ... + 2065759980.

It is an arithmetic number, because the mean of its divisors is an integer number (1371663088896).

Almost surely, 2^{9572721012659} is an apocalyptic number.

9572721012659 is a deficient number, since it is larger than the sum of its proper divisors (1400583698509).

9572721012659 is a wasteful number, since it uses less digits than its factorization.

9572721012659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4131515665.

The product of its (nonzero) digits is 4762800, while the sum is 56.

The spelling of 9572721012659 in words is "nine trillion, five hundred seventy-two billion, seven hundred twenty-one million, twelve thousand, six hundred fifty-nine".