16323231777 has 4 divisors (see below), whose sum is σ = 21764309040. Its totient is φ = 10882154516.

The previous prime is 16323231739. The next prime is 16323231779. The reversal of 16323231777 is 77713232361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16323231777 - 2¹⁴ = 16323215393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16323231779) 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, 2720538627 + ... + 2720538632.

It is an arithmetic number, because the mean of its divisors is an integer number (5441077260).

Almost surely, 2^16323231777 is an apocalyptic number.

It is an amenable number.

16323231777 is a deficient number, since it is larger than the sum of its proper divisors (5441077263).

16323231777 is an equidigital number, since it uses as much as digits as its factorization.

16323231777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441077262.

The product of its digits is 222264, while the sum is 42.

The spelling of 16323231777 in words is "sixteen billion, three hundred twenty-three million, two hundred thirty-one thousand, seven hundred seventy-seven".