252638051329 has 4 divisors (see below), whose sum is σ = 260787665920. Its totient is φ = 244488436740.

The previous prime is 252638051291. The next prime is 252638051353. The reversal of 252638051329 is 923150836252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252638051329 - 2⁷ = 252638051201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252638058329) 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, 4074807249 + ... + 4074807310.

It is an arithmetic number, because the mean of its divisors is an integer number (65196916480).

Almost surely, 2^252638051329 is an apocalyptic number.

It is an amenable number.

252638051329 is a deficient number, since it is larger than the sum of its proper divisors (8149614591).

252638051329 is an equidigital number, since it uses as much as digits as its factorization.

252638051329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8149614590.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 252638051329 in words is "two hundred fifty-two billion, six hundred thirty-eight million, fifty-one thousand, three hundred twenty-nine".