252784015729 has 4 divisors (see below), whose sum is σ = 288896017984. Its totient is φ = 216672013476.

The previous prime is 252784015727. The next prime is 252784015753. The reversal of 252784015729 is 927510487252.

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 252784015729 - 2¹ = 252784015727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252784015721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18056001117 + ... + 18056001130.

It is an arithmetic number, because the mean of its divisors is an integer number (72224004496).

Almost surely, 2^252784015729 is an apocalyptic number.

It is an amenable number.

252784015729 is a deficient number, since it is larger than the sum of its proper divisors (36112002255).

252784015729 is an equidigital number, since it uses as much as digits as its factorization.

252784015729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36112002254.

The product of its (nonzero) digits is 2822400, while the sum is 52.

The spelling of 252784015729 in words is "two hundred fifty-two billion, seven hundred eighty-four million, fifteen thousand, seven hundred twenty-nine".