252674366981 has 2 divisors, whose sum is σ = 252674366982. Its totient is φ = 252674366980.

The previous prime is 252674366941. The next prime is 252674367013. The reversal of 252674366981 is 189663476252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245763105025 + 6911261956 = 495745^2 + 83134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252674366981 is a prime.

It is a super-2 number, since 2×252674366981² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 252674366981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252674366941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126337183490 + 126337183491.

It is an arithmetic number, because the mean of its divisors is an integer number (126337183491).

Almost surely, 2^252674366981 is an apocalyptic number.

It is an amenable number.

252674366981 is a deficient number, since it is larger than the sum of its proper divisors (1).

252674366981 is an equidigital number, since it uses as much as digits as its factorization.

252674366981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 59.

The spelling of 252674366981 in words is "two hundred fifty-two billion, six hundred seventy-four million, three hundred sixty-six thousand, nine hundred eighty-one".