11839776397 has 2 divisors, whose sum is σ = 11839776398. Its totient is φ = 11839776396.

The previous prime is 11839776383. The next prime is 11839776419. The reversal of 11839776397 is 79367793811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11461629481 + 378146916 = 107059^2 + 19446^2 .

It is an emirp because it is prime and its reverse (79367793811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11839776397 - 2⁷ = 11839776269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11839776197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5919888198 + 5919888199.

It is an arithmetic number, because the mean of its divisors is an integer number (5919888199).

Almost surely, 2^11839776397 is an apocalyptic number.

It is an amenable number.

11839776397 is a deficient number, since it is larger than the sum of its proper divisors (1).

11839776397 is an equidigital number, since it uses as much as digits as its factorization.

11839776397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12002256, while the sum is 61.

The spelling of 11839776397 in words is "eleven billion, eight hundred thirty-nine million, seven hundred seventy-six thousand, three hundred ninety-seven".