252134612381 has 2 divisors, whose sum is σ = 252134612382. Its totient is φ = 252134612380.

The previous prime is 252134612363. The next prime is 252134612407. The reversal of 252134612381 is 183216431252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241728572281 + 10406040100 = 491659^2 + 102010^2 .

It is a cyclic number.

It is not a de Polignac number, because 252134612381 - 2²² = 252130418077 is a prime.

It is a super-3 number, since 3×252134612381³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252134612881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126067306190 + 126067306191.

It is an arithmetic number, because the mean of its divisors is an integer number (126067306191).

Almost surely, 2^252134612381 is an apocalyptic number.

It is an amenable number.

252134612381 is a deficient number, since it is larger than the sum of its proper divisors (1).

252134612381 is an equidigital number, since it uses as much as digits as its factorization.

252134612381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The spelling of 252134612381 in words is "two hundred fifty-two billion, one hundred thirty-four million, six hundred twelve thousand, three hundred eighty-one".