252766687009 has 2 divisors, whose sum is σ = 252766687010. Its totient is φ = 252766687008.

The previous prime is 252766687003. The next prime is 252766687037. The reversal of 252766687009 is 900786667252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240985755409 + 11780931600 = 490903^2 + 108540^2 .

It is a cyclic number.

It is not a de Polignac number, because 252766687009 - 2³ = 252766687001 is a prime.

It is not a weakly prime, because it can be changed into another prime (252766687001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126383343504 + 126383343505.

It is an arithmetic number, because the mean of its divisors is an integer number (126383343505).

Almost surely, 2^252766687009 is an apocalyptic number.

It is an amenable number.

252766687009 is a deficient number, since it is larger than the sum of its proper divisors (1).

252766687009 is an equidigital number, since it uses as much as digits as its factorization.

252766687009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 252766687009 in words is "two hundred fifty-two billion, seven hundred sixty-six million, six hundred eighty-seven thousand, nine".