252727861891 has 16 divisors (see below), whose sum is σ = 260783677440. Its totient is φ = 244779333120.

The previous prime is 252727861843. The next prime is 252727861901. The reversal of 252727861891 is 198168727252.

It is a cyclic number.

It is not a de Polignac number, because 252727861891 - 2²³ = 252719473283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252727861291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2532030 + ... + 2629948.

It is an arithmetic number, because the mean of its divisors is an integer number (16298979840).

Almost surely, 2^252727861891 is an apocalyptic number.

252727861891 is a deficient number, since it is larger than the sum of its proper divisors (8055815549).

252727861891 is a wasteful number, since it uses less digits than its factorization.

252727861891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98466.

The product of its digits is 6773760, while the sum is 58.

The spelling of 252727861891 in words is "two hundred fifty-two billion, seven hundred twenty-seven million, eight hundred sixty-one thousand, eight hundred ninety-one".