16321145767 has 4 divisors (see below), whose sum is σ = 16321600240. Its totient is φ = 16320691296.

The previous prime is 16321145677. The next prime is 16321145777. The reversal of 16321145767 is 76754112361.

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 16321145767 - 2²³ = 16312757159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16321145777) 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, 168267 + ... + 246892.

It is an arithmetic number, because the mean of its divisors is an integer number (4080400060).

Almost surely, 2^16321145767 is an apocalyptic number.

16321145767 is a deficient number, since it is larger than the sum of its proper divisors (454473).

16321145767 is an equidigital number, since it uses as much as digits as its factorization.

16321145767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454472.

The product of its digits is 211680, while the sum is 43.

The spelling of 16321145767 in words is "sixteen billion, three hundred twenty-one million, one hundred forty-five thousand, seven hundred sixty-seven".