16406873999 has 8 divisors (see below), whose sum is σ = 16881470208. Its totient is φ = 15933918240.

The previous prime is 16406873957. The next prime is 16406874013. The reversal of 16406873999 is 99937860461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16406873999 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 (16406873929) 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, 389807 + ... + 429840.

It is an arithmetic number, because the mean of its divisors is an integer number (2110183776).

Almost surely, 2^16406873999 is an apocalyptic number.

16406873999 is a deficient number, since it is larger than the sum of its proper divisors (474596209).

16406873999 is an equidigital number, since it uses as much as digits as its factorization.

16406873999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820225.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The spelling of 16406873999 in words is "sixteen billion, four hundred six million, eight hundred seventy-three thousand, nine hundred ninety-nine".