16193678139 has 24 divisors (see below), whose sum is σ = 24404288720. Its totient is φ = 10612744416.

The previous prime is 16193678129. The next prime is 16193678153. The reversal of 16193678139 is 93187639161.

It is a happy number.

16193678139 is a `hidden beast` number, since 1 + 619 + 3 + 6 + 7 + 8 + 13 + 9 = 666.

It is not a de Polignac number, because 16193678139 - 2¹¹ = 16193676091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16193678129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7839 + ... + 180135.

Almost surely, 2^16193678139 is an apocalyptic number.

16193678139 is a deficient number, since it is larger than the sum of its proper divisors (8210610581).

16193678139 is an equidigital number, since it uses as much as digits as its factorization.

16193678139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172424 (or 172359 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The spelling of 16193678139 in words is "sixteen billion, one hundred ninety-three million, six hundred seventy-eight thousand, one hundred thirty-nine".