252557722166 has 8 divisors (see below), whose sum is σ = 401121088200. Its totient is φ = 118850692768.

The previous prime is 252557722141. The next prime is 252557722189. The reversal of 252557722166 is 661227755252.

It is a happy number.

252557722166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3714084116 + ... + 3714084183.

It is an arithmetic number, because the mean of its divisors is an integer number (50140136025).

Almost surely, 2^252557722166 is an apocalyptic number.

252557722166 is a deficient number, since it is larger than the sum of its proper divisors (148563366034).

252557722166 is a wasteful number, since it uses less digits than its factorization.

252557722166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7428168318.

The product of its digits is 3528000, while the sum is 50.

The spelling of 252557722166 in words is "two hundred fifty-two billion, five hundred fifty-seven million, seven hundred twenty-two thousand, one hundred sixty-six".