11405599999 has 16 divisors (see below), whose sum is σ = 12169029600. Its totient is φ = 10652590080.

The previous prime is 11405599939. The next prime is 11405600069. The reversal of 11405599999 is 99999550411.

It is a cyclic number.

It is not a de Polignac number, because 11405599999 - 2²⁵ = 11372045567 is a prime.

It is a super-2 number, since 2×11405599999² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11405599939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5351164 + ... + 5353294.

It is an arithmetic number, because the mean of its divisors is an integer number (760564350).

Almost surely, 2^11405599999 is an apocalyptic number.

11405599999 is a deficient number, since it is larger than the sum of its proper divisors (763429601).

11405599999 is a wasteful number, since it uses less digits than its factorization.

11405599999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410.

The product of its (nonzero) digits is 5904900, while the sum is 61.

The spelling of 11405599999 in words is "eleven billion, four hundred five million, five hundred ninety-nine thousand, nine hundred ninety-nine".