252414650861 has 2 divisors, whose sum is σ = 252414650862. Its totient is φ = 252414650860.

The previous prime is 252414650783. The next prime is 252414650881. The reversal of 252414650861 is 168056414252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197119128361 + 55295522500 = 443981^2 + 235150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252414650861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252414650881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126207325430 + 126207325431.

It is an arithmetic number, because the mean of its divisors is an integer number (126207325431).

Almost surely, 2^252414650861 is an apocalyptic number.

It is an amenable number.

252414650861 is a deficient number, since it is larger than the sum of its proper divisors (1).

252414650861 is an equidigital number, since it uses as much as digits as its factorization.

252414650861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 252414650861 in words is "two hundred fifty-two billion, four hundred fourteen million, six hundred fifty thousand, eight hundred sixty-one".