16375138905291 has 32 divisors (see below), whose sum is σ = 22110753627648. Its totient is φ = 10778704020480.

The previous prime is 16375138905269. The next prime is 16375138905299. The reversal of 16375138905291 is 19250983157361.

It is a happy number.

It is not a de Polignac number, because 16375138905291 - 2¹³ = 16375138897099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16375138905299) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 212982586 + ... + 213059456.

It is an arithmetic number, because the mean of its divisors is an integer number (690961050864).

Almost surely, 2^{16375138905291} is an apocalyptic number.

16375138905291 is a deficient number, since it is larger than the sum of its proper divisors (5735614722357).

16375138905291 is an equidigital number, since it uses as much as digits as its factorization.

16375138905291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78691.

The product of its (nonzero) digits is 12247200, while the sum is 60.

The spelling of 16375138905291 in words is "sixteen trillion, three hundred seventy-five billion, one hundred thirty-eight million, nine hundred five thousand, two hundred ninety-one".