13599099557 has 2 divisors, whose sum is σ = 13599099558. Its totient is φ = 13599099556.

The previous prime is 13599099551. The next prime is 13599099641. The reversal of 13599099557 is 75599099531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12832584961 + 766514596 = 113281^2 + 27686^2 .

It is a cyclic number.

It is not a de Polignac number, because 13599099557 - 2³² = 9304132261 is a prime.

It is a super-2 number, since 2×13599099557² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13599099557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13599099551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6799549778 + 6799549779.

It is an arithmetic number, because the mean of its divisors is an integer number (6799549779).

Almost surely, 2^13599099557 is an apocalyptic number.

It is an amenable number.

13599099557 is a deficient number, since it is larger than the sum of its proper divisors (1).

13599099557 is an equidigital number, since it uses as much as digits as its factorization.

13599099557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17222625, while the sum is 62.

The spelling of 13599099557 in words is "thirteen billion, five hundred ninety-nine million, ninety-nine thousand, five hundred fifty-seven".