252801666277 has 2 divisors, whose sum is σ = 252801666278. Its totient is φ = 252801666276.

The previous prime is 252801666209. The next prime is 252801666287. The reversal of 252801666277 is 772666108252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197447811201 + 55353855076 = 444351^2 + 235274^2 .

It is a cyclic number.

It is not a de Polignac number, because 252801666277 - 2³⁵ = 218441927909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252801666287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126400833138 + 126400833139.

It is an arithmetic number, because the mean of its divisors is an integer number (126400833139).

Almost surely, 2^252801666277 is an apocalyptic number.

It is an amenable number.

252801666277 is a deficient number, since it is larger than the sum of its proper divisors (1).

252801666277 is an equidigital number, since it uses as much as digits as its factorization.

252801666277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 252801666277 in words is "two hundred fifty-two billion, eight hundred one million, six hundred sixty-six thousand, two hundred seventy-seven".