16039198399 has 16 divisors (see below), whose sum is σ = 18498205440. Its totient is φ = 13622431680.

The previous prime is 16039198397. The next prime is 16039198411. The reversal of 16039198399 is 99389193061.

It is a cyclic number.

It is not a de Polignac number, because 16039198399 - 2¹ = 16039198397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16039198391) 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, 613507 + ... + 639115.

It is an arithmetic number, because the mean of its divisors is an integer number (1156137840).

Almost surely, 2^16039198399 is an apocalyptic number.

16039198399 is a deficient number, since it is larger than the sum of its proper divisors (2459007041).

16039198399 is a wasteful number, since it uses less digits than its factorization.

16039198399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26430.

The product of its (nonzero) digits is 2834352, while the sum is 58.

The spelling of 16039198399 in words is "sixteen billion, thirty-nine million, one hundred ninety-eight thousand, three hundred ninety-nine".