252667081717 has 2 divisors, whose sum is σ = 252667081718. Its totient is φ = 252667081716.

The previous prime is 252667081703. The next prime is 252667081729. The reversal of 252667081717 is 717180766252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239325445681 + 13341636036 = 489209^2 + 115506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252667081717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252667081757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126333540858 + 126333540859.

It is an arithmetic number, because the mean of its divisors is an integer number (126333540859).

Almost surely, 2^252667081717 is an apocalyptic number.

It is an amenable number.

252667081717 is a deficient number, since it is larger than the sum of its proper divisors (1).

252667081717 is an equidigital number, since it uses as much as digits as its factorization.

252667081717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The spelling of 252667081717 in words is "two hundred fifty-two billion, six hundred sixty-seven million, eighty-one thousand, seven hundred seventeen".