13575479779 has 2 divisors, whose sum is σ = 13575479780. Its totient is φ = 13575479778.

The previous prime is 13575479737. The next prime is 13575479833. The reversal of 13575479779 is 97797457531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13575479779 - 2²³ = 13567091171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13575479779.

It is not a weakly prime, because it can be changed into another prime (13575479279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6787739889 + 6787739890.

It is an arithmetic number, because the mean of its divisors is an integer number (6787739890).

Almost surely, 2^13575479779 is an apocalyptic number.

13575479779 is a deficient number, since it is larger than the sum of its proper divisors (1).

13575479779 is an equidigital number, since it uses as much as digits as its factorization.

13575479779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58344300, while the sum is 64.

The spelling of 13575479779 in words is "thirteen billion, five hundred seventy-five million, four hundred seventy-nine thousand, seven hundred seventy-nine".