252744473220647 has 4 divisors (see below), whose sum is σ = 252745108819296. Its totient is φ = 252743837622000.

The previous prime is 252744473220623. The next prime is 252744473220683. The reversal of 252744473220647 is 746022374447252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 252744473220647 - 2⁶ = 252744473220583 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 (252744473220047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317202479 + ... + 317998272.

It is an arithmetic number, because the mean of its divisors is an integer number (63186277204824).

Almost surely, 2^{252744473220647} is an apocalyptic number.

252744473220647 is a deficient number, since it is larger than the sum of its proper divisors (635598649).

252744473220647 is an equidigital number, since it uses as much as digits as its factorization.

252744473220647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635598648.

The product of its (nonzero) digits is 126443520, while the sum is 59.

The spelling of 252744473220647 in words is "two hundred fifty-two trillion, seven hundred forty-four billion, four hundred seventy-three million, two hundred twenty thousand, six hundred forty-seven".