11869406257 has 2 divisors, whose sum is σ = 11869406258. Its totient is φ = 11869406256.

The previous prime is 11869406249. The next prime is 11869406281. The reversal of 11869406257 is 75260496811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7618496656 + 4250909601 = 87284^2 + 65199^2 .

It is an emirp because it is prime and its reverse (75260496811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11869406257 - 2³ = 11869406249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11869406257.

It is not a weakly prime, because it can be changed into another prime (11869406207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5934703128 + 5934703129.

It is an arithmetic number, because the mean of its divisors is an integer number (5934703129).

Almost surely, 2^11869406257 is an apocalyptic number.

It is an amenable number.

11869406257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11869406257 is an equidigital number, since it uses as much as digits as its factorization.

11869406257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 11869406257 in words is "eleven billion, eight hundred sixty-nine million, four hundred six thousand, two hundred fifty-seven".