252746417617247 has 4 divisors (see below), whose sum is σ = 257030255204040. Its totient is φ = 248462580030456.

The previous prime is 252746417617237. The next prime is 252746417617249. The reversal of 252746417617247 is 742716714647252.

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 252746417617247 - 2²⁰ = 252746416568671 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 (252746417617249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2141918793308 + ... + 2141918793425.

It is an arithmetic number, because the mean of its divisors is an integer number (64257563801010).

Almost surely, 2^{252746417617247} is an apocalyptic number.

252746417617247 is a deficient number, since it is larger than the sum of its proper divisors (4283837586793).

252746417617247 is an equidigital number, since it uses as much as digits as its factorization.

252746417617247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4283837586792.

The product of its digits is 221276160, while the sum is 65.

The spelling of 252746417617247 in words is "two hundred fifty-two trillion, seven hundred forty-six billion, four hundred seventeen million, six hundred seventeen thousand, two hundred forty-seven".