252101989439 has 4 divisors (see below), whose sum is σ = 256234809000. Its totient is φ = 247969169880.

The previous prime is 252101989429. The next prime is 252101989453. The reversal of 252101989439 is 934989101252.

It is a happy number.

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 252101989439 - 2¹⁶ = 252101923903 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 (252101989429) 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, 2066409689 + ... + 2066409810.

It is an arithmetic number, because the mean of its divisors is an integer number (64058702250).

Almost surely, 2^252101989439 is an apocalyptic number.

252101989439 is a deficient number, since it is larger than the sum of its proper divisors (4132819561).

252101989439 is an equidigital number, since it uses as much as digits as its factorization.

252101989439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4132819560.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 252101989439 in words is "two hundred fifty-two billion, one hundred one million, nine hundred eighty-nine thousand, four hundred thirty-nine".