252664865609 has 8 divisors (see below), whose sum is σ = 275933028672. Its totient is φ = 229944188880.

The previous prime is 252664865603. The next prime is 252664865611. The reversal of 252664865609 is 906568466252.

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 252664865609 - 2¹² = 252664861513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252664865603) 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, 136870619 + ... + 136872464.

It is an arithmetic number, because the mean of its divisors is an integer number (34491628584).

Almost surely, 2^252664865609 is an apocalyptic number.

It is an amenable number.

252664865609 is a deficient number, since it is larger than the sum of its proper divisors (23268163063).

252664865609 is a wasteful number, since it uses less digits than its factorization.

252664865609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273743167.

The product of its (nonzero) digits is 37324800, while the sum is 59.

The spelling of 252664865609 in words is "two hundred fifty-two billion, six hundred sixty-four million, eight hundred sixty-five thousand, six hundred nine".