16497403999 has 8 divisors (see below), whose sum is σ = 17388826880. Its totient is φ = 15608295000.

The previous prime is 16497403991. The next prime is 16497404017. The reversal of 16497403999 is 99930479461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16497403999 - 2³ = 16497403991 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 (16497403991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563817 + ... + 592354.

It is an arithmetic number, because the mean of its divisors is an integer number (2173603360).

Almost surely, 2^16497403999 is an apocalyptic number.

16497403999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

16497403999 is a deficient number, since it is larger than the sum of its proper divisors (891422881).

16497403999 is a wasteful number, since it uses less digits than its factorization.

16497403999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156941.

The product of its (nonzero) digits is 13226976, while the sum is 61.

The spelling of 16497403999 in words is "sixteen billion, four hundred ninety-seven million, four hundred three thousand, nine hundred ninety-nine".