16498943985 has 16 divisors (see below), whose sum is σ = 27111779136. Its totient is φ = 8561613888.

The previous prime is 16498943971. The next prime is 16498943999. The reversal of 16498943985 is 58934989461.

It is an interprime number because it is at equal distance from previous prime (16498943971) and next prime (16498943999).

It is not a de Polignac number, because 16498943985 - 2⁸ = 16498943729 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14863359 + ... + 14864468.

It is an arithmetic number, because the mean of its divisors is an integer number (1694486196).

Almost surely, 2^16498943985 is an apocalyptic number.

16498943985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16498943985 is a deficient number, since it is larger than the sum of its proper divisors (10612835151).

16498943985 is a wasteful number, since it uses less digits than its factorization.

16498943985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29727872.

The product of its digits is 67184640, while the sum is 66.

The spelling of 16498943985 in words is "sixteen billion, four hundred ninety-eight million, nine hundred forty-three thousand, nine hundred eighty-five".