15599905055 has 16 divisors (see below), whose sum is σ = 21590437440. Its totient is φ = 10598936832.

The previous prime is 15599905051. The next prime is 15599905073. The reversal of 15599905055 is 55050999551.

It is a cyclic number.

It is not a de Polignac number, because 15599905055 - 2² = 15599905051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15599904988 and 15599905006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15599905051) 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 15 ways as a sum of consecutive naturals, for example, 2040734 + ... + 2048363.

It is an arithmetic number, because the mean of its divisors is an integer number (1349402340).

Almost surely, 2^15599905055 is an apocalyptic number.

15599905055 is a deficient number, since it is larger than the sum of its proper divisors (5990532385).

15599905055 is a wasteful number, since it uses less digits than its factorization.

15599905055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089218.

The product of its (nonzero) digits is 2278125, while the sum is 53.

The spelling of 15599905055 in words is "fifteen billion, five hundred ninety-nine million, nine hundred five thousand, fifty-five".