16371543091 has 4 divisors (see below), whose sum is σ = 16373332000. Its totient is φ = 16369754184.

The previous prime is 16371543061. The next prime is 16371543107. The reversal of 16371543091 is 19034517361.

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 16371543091 - 2¹⁷ = 16371412019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16371543061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 880656 + ... + 899053.

It is an arithmetic number, because the mean of its divisors is an integer number (4093333000).

Almost surely, 2^16371543091 is an apocalyptic number.

16371543091 is a deficient number, since it is larger than the sum of its proper divisors (1788909).

16371543091 is an equidigital number, since it uses as much as digits as its factorization.

16371543091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788908.

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 16371543091 in words is "sixteen billion, three hundred seventy-one million, five hundred forty-three thousand, ninety-one".