11853221579 has 2 divisors, whose sum is σ = 11853221580. Its totient is φ = 11853221578.

The previous prime is 11853221539. The next prime is 11853221587. The reversal of 11853221579 is 97512235811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11853221579 - 2⁸ = 11853221323 is a prime.

It is not a weakly prime, because it can be changed into another prime (11853221509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5926610789 + 5926610790.

It is an arithmetic number, because the mean of its divisors is an integer number (5926610790).

Almost surely, 2^11853221579 is an apocalyptic number.

11853221579 is a deficient number, since it is larger than the sum of its proper divisors (1).

11853221579 is an equidigital number, since it uses as much as digits as its factorization.

11853221579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 44.

The spelling of 11853221579 in words is "eleven billion, eight hundred fifty-three million, two hundred twenty-one thousand, five hundred seventy-nine".