252557079661 has 8 divisors (see below), whose sum is σ = 256274928000. Its totient is φ = 248852254560.

The previous prime is 252557079653. The next prime is 252557079713. The reversal of 252557079661 is 166970755252.

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 252557079661 - 2³ = 252557079653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252557079161) 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, 3216736 + ... + 3294313.

It is an arithmetic number, because the mean of its divisors is an integer number (32034366000).

Almost surely, 2^252557079661 is an apocalyptic number.

It is an amenable number.

252557079661 is a deficient number, since it is larger than the sum of its proper divisors (3717848339).

252557079661 is an equidigital number, since it uses as much as digits as its factorization.

252557079661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6511619.

The product of its (nonzero) digits is 7938000, while the sum is 55.

The spelling of 252557079661 in words is "two hundred fifty-two billion, five hundred fifty-seven million, seventy-nine thousand, six hundred sixty-one".