252597986891 has 8 divisors (see below), whose sum is σ = 271549908480. Its totient is φ = 234211794408.

The previous prime is 252597986833. The next prime is 252597986899. The reversal of 252597986891 is 198689795252.

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 252597986891 - 2¹⁴ = 252597970507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252597986899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141431351 + ... + 141433136.

It is an arithmetic number, because the mean of its divisors is an integer number (33943738560).

Almost surely, 2^252597986891 is an apocalyptic number.

252597986891 is a deficient number, since it is larger than the sum of its proper divisors (18951921589).

252597986891 is a wasteful number, since it uses less digits than its factorization.

252597986891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282864553.

The product of its digits is 195955200, while the sum is 71.

The spelling of 252597986891 in words is "two hundred fifty-two billion, five hundred ninety-seven million, nine hundred eighty-six thousand, eight hundred ninety-one".