16138461995 has 4 divisors (see below), whose sum is σ = 19366154400. Its totient is φ = 12910769592.

The previous prime is 16138461979. The next prime is 16138462033. The reversal of 16138461995 is 59916483161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16138461995 - 2⁴ = 16138461979 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613846195 + ... + 1613846204.

It is an arithmetic number, because the mean of its divisors is an integer number (4841538600).

Almost surely, 2^16138461995 is an apocalyptic number.

16138461995 is a deficient number, since it is larger than the sum of its proper divisors (3227692405).

16138461995 is an equidigital number, since it uses as much as digits as its factorization.

16138461995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227692404.

The product of its digits is 1399680, while the sum is 53.

The spelling of 16138461995 in words is "sixteen billion, one hundred thirty-eight million, four hundred sixty-one thousand, nine hundred ninety-five".