16255597129 has 4 divisors (see below), whose sum is σ = 16263455940. Its totient is φ = 16247738320.

The previous prime is 16255597123. The next prime is 16255597159. The reversal of 16255597129 is 92179555261.

16255597129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6439741504 + 9815855625 = 80248^2 + 99075^2 .

It is a cyclic number.

It is not a de Polignac number, because 16255597129 - 2¹⁷ = 16255466057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16255597123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3926302 + ... + 3930439.

It is an arithmetic number, because the mean of its divisors is an integer number (4065863985).

Almost surely, 2^16255597129 is an apocalyptic number.

It is an amenable number.

16255597129 is a deficient number, since it is larger than the sum of its proper divisors (7858811).

16255597129 is an equidigital number, since it uses as much as digits as its factorization.

16255597129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7858810.

The product of its digits is 1701000, while the sum is 52.

The spelling of 16255597129 in words is "sixteen billion, two hundred fifty-five million, five hundred ninety-seven thousand, one hundred twenty-nine".