13558406399 has 6 divisors (see below), whose sum is σ = 13897166640. Its totient is φ = 13227711920.

The previous prime is 13558406383. The next prime is 13558406431. The reversal of 13558406399 is 99360485531.

It is not a de Polignac number, because 13558406399 - 2⁴ = 13558406383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13558406399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13558406369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4031159 + ... + 4034520.

It is an arithmetic number, because the mean of its divisors is an integer number (2316194440).

Almost surely, 2^13558406399 is an apocalyptic number.

13558406399 is a deficient number, since it is larger than the sum of its proper divisors (338760241).

13558406399 is an frugal number, since it uses more digits than its factorization.

13558406399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8065761 (or 8065720 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 53.

The spelling of 13558406399 in words is "thirteen billion, five hundred fifty-eight million, four hundred six thousand, three hundred ninety-nine".