252135431985929 has 2 divisors, whose sum is σ = 252135431985930. Its totient is φ = 252135431985928.

The previous prime is 252135431985923. The next prime is 252135431986037. The reversal of 252135431985929 is 929589134531252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252135431985529 + 400 = 15878773^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 252135431985929 - 2¹² = 252135431981833 is a prime.

It is not a weakly prime, because it can be changed into another prime (252135431985923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126067715992964 + 126067715992965.

It is an arithmetic number, because the mean of its divisors is an integer number (126067715992965).

Almost surely, 2^{252135431985929} is an apocalyptic number.

It is an amenable number.

252135431985929 is a deficient number, since it is larger than the sum of its proper divisors (1).

252135431985929 is an equidigital number, since it uses as much as digits as its factorization.

252135431985929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952000, while the sum is 68.

The spelling of 252135431985929 in words is "two hundred fifty-two trillion, one hundred thirty-five billion, four hundred thirty-one million, nine hundred eighty-five thousand, nine hundred twenty-nine".