16940086247 has 16 divisors (see below), whose sum is σ = 20205783552. Its totient is φ = 13886056800.

The previous prime is 16940086231. The next prime is 16940086279. The reversal of 16940086247 is 74268004961.

It is not a de Polignac number, because 16940086247 - 2⁴ = 16940086231 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16940086217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1588748 + ... + 1599374.

It is an arithmetic number, because the mean of its divisors is an integer number (1262861472).

Almost surely, 2^16940086247 is an apocalyptic number.

16940086247 is a deficient number, since it is larger than the sum of its proper divisors (3265697305).

16940086247 is a wasteful number, since it uses less digits than its factorization.

16940086247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20558.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 16940086247 in words is "sixteen billion, nine hundred forty million, eighty-six thousand, two hundred forty-seven".