11798090257 has 2 divisors, whose sum is σ = 11798090258. Its totient is φ = 11798090256.

The previous prime is 11798090231. The next prime is 11798090263. The reversal of 11798090257 is 75209089711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7197995281 + 4600094976 = 84841^2 + 67824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11798090257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11798090257.

It is not a weakly prime, because it can be changed into another prime (11798090657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5899045128 + 5899045129.

It is an arithmetic number, because the mean of its divisors is an integer number (5899045129).

Almost surely, 2^11798090257 is an apocalyptic number.

It is an amenable number.

11798090257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11798090257 is an equidigital number, since it uses as much as digits as its factorization.

11798090257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 49.

The spelling of 11798090257 in words is "eleven billion, seven hundred ninety-eight million, ninety thousand, two hundred fifty-seven".