16261372799 has 6 divisors (see below), whose sum is σ = 18916290864. Its totient is φ = 13938319500.

The previous prime is 16261372789. The next prime is 16261372801. The reversal of 16261372799 is 99727316261.

It is not a de Polignac number, because 16261372799 - 2¹² = 16261368703 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 16261372799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16261372769) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165932327 + ... + 165932424.

It is an arithmetic number, because the mean of its divisors is an integer number (3152715144).

Almost surely, 2^16261372799 is an apocalyptic number.

16261372799 is a deficient number, since it is larger than the sum of its proper divisors (2654918065).

16261372799 is an equidigital number, since it uses as much as digits as its factorization.

16261372799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331864765 (or 331864758 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 53.

The spelling of 16261372799 in words is "sixteen billion, two hundred sixty-one million, three hundred seventy-two thousand, seven hundred ninety-nine".