11845638899 has 2 divisors, whose sum is σ = 11845638900. Its totient is φ = 11845638898.

The previous prime is 11845638887. The next prime is 11845638907. The reversal of 11845638899 is 99883654811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11845638899 - 2²⁰ = 11844590323 is a prime.

It is not a weakly prime, because it can be changed into another prime (11845638809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5922819449 + 5922819450.

It is an arithmetic number, because the mean of its divisors is an integer number (5922819450).

Almost surely, 2^11845638899 is an apocalyptic number.

11845638899 is a deficient number, since it is larger than the sum of its proper divisors (1).

11845638899 is an equidigital number, since it uses as much as digits as its factorization.

11845638899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14929920, while the sum is 62.

The spelling of 11845638899 in words is "eleven billion, eight hundred forty-five million, six hundred thirty-eight thousand, eight hundred ninety-nine".