11845639297 has 2 divisors, whose sum is σ = 11845639298. Its totient is φ = 11845639296.

The previous prime is 11845639261. The next prime is 11845639327. The reversal of 11845639297 is 79293654811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7492806721 + 4352832576 = 86561^2 + 65976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11845639297 is a prime.

It is not a weakly prime, because it can be changed into another prime (11845639697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5922819648 + 5922819649.

It is an arithmetic number, because the mean of its divisors is an integer number (5922819649).

Almost surely, 2^11845639297 is an apocalyptic number.

It is an amenable number.

11845639297 is a deficient number, since it is larger than the sum of its proper divisors (1).

11845639297 is an equidigital number, since it uses as much as digits as its factorization.

11845639297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 55.

The spelling of 11845639297 in words is "eleven billion, eight hundred forty-five million, six hundred thirty-nine thousand, two hundred ninety-seven".