16400289599 has 4 divisors (see below), whose sum is σ = 16401123936. Its totient is φ = 16399455264.

The previous prime is 16400289533. The next prime is 16400289617. The reversal of 16400289599 is 99598200461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99598200461 = 138371 ⋅719791.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16400289599 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 16400289599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16400289509) 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 3 ways as a sum of consecutive naturals, for example, 386954 + ... + 427239.

It is an arithmetic number, because the mean of its divisors is an integer number (4100280984).

Almost surely, 2^16400289599 is an apocalyptic number.

16400289599 is a deficient number, since it is larger than the sum of its proper divisors (834337).

16400289599 is an equidigital number, since it uses as much as digits as its factorization.

16400289599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834336.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 16400289599 in words is "sixteen billion, four hundred million, two hundred eighty-nine thousand, five hundred ninety-nine".