16299359991 has 12 divisors (see below), whose sum is σ = 24179831832. Its totient is φ = 10572557616.

The previous prime is 16299359981. The next prime is 16299360029. The reversal of 16299359991 is 19995399261.

16299359991 is a `hidden beast` number, since 16 + 29 + 9 + 3 + 599 + 9 + 1 = 666.

It is not a de Polignac number, because 16299359991 - 2⁶ = 16299359927 is a prime.

It is a super-3 number, since 3×16299359991³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16299359941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24473181 + ... + 24473846.

It is an arithmetic number, because the mean of its divisors is an integer number (2014985986).

Almost surely, 2^16299359991 is an apocalyptic number.

16299359991 is a deficient number, since it is larger than the sum of its proper divisors (7880471841).

16299359991 is a wasteful number, since it uses less digits than its factorization.

16299359991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48947070 (or 48947067 counting only the distinct ones).

The product of its digits is 10628820, while the sum is 63.

The spelling of 16299359991 in words is "sixteen billion, two hundred ninety-nine million, three hundred fifty-nine thousand, nine hundred ninety-one".