11858921579 has 2 divisors, whose sum is σ = 11858921580. Its totient is φ = 11858921578.

The previous prime is 11858921537. The next prime is 11858921587. The reversal of 11858921579 is 97512985811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11858921579 - 2²⁰ = 11857873003 is a prime.

It is not a weakly prime, because it can be changed into another prime (11858921519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5929460789 + 5929460790.

It is an arithmetic number, because the mean of its divisors is an integer number (5929460790).

Almost surely, 2^11858921579 is an apocalyptic number.

11858921579 is a deficient number, since it is larger than the sum of its proper divisors (1).

11858921579 is an equidigital number, since it uses as much as digits as its factorization.

11858921579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 56.

The spelling of 11858921579 in words is "eleven billion, eight hundred fifty-eight million, nine hundred twenty-one thousand, five hundred seventy-nine".