11111345579 has 2 divisors, whose sum is σ = 11111345580. Its totient is φ = 11111345578.

The previous prime is 11111345543. The next prime is 11111345587. The reversal of 11111345579 is 97554311111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111345579 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (11111345519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555672789 + 5555672790.

It is an arithmetic number, because the mean of its divisors is an integer number (5555672790).

Almost surely, 2^11111345579 is an apocalyptic number.

11111345579 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111345579 is an equidigital number, since it uses as much as digits as its factorization.

11111345579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 38.

The spelling of 11111345579 in words is "eleven billion, one hundred eleven million, three hundred forty-five thousand, five hundred seventy-nine".