16459442985 has 8 divisors (see below), whose sum is σ = 26335108800. Its totient is φ = 8778369584.

The previous prime is 16459442981. The next prime is 16459443017. The reversal of 16459442985 is 58924495461.

It is a happy number.

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 16459442985 - 2² = 16459442981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16459442981) 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, 548648085 + ... + 548648114.

It is an arithmetic number, because the mean of its divisors is an integer number (3291888600).

Almost surely, 2^16459442985 is an apocalyptic number.

16459442985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16459442985 is a deficient number, since it is larger than the sum of its proper divisors (9875665815).

16459442985 is a wasteful number, since it uses less digits than its factorization.

16459442985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097296207.

The product of its digits is 12441600, while the sum is 57.

The spelling of 16459442985 in words is "sixteen billion, four hundred fifty-nine million, four hundred forty-two thousand, nine hundred eighty-five".