16144631863 has 4 divisors (see below), whose sum is σ = 16185298840. Its totient is φ = 16103964888.

The previous prime is 16144631861. The next prime is 16144631903. The reversal of 16144631863 is 36813644161.

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 16144631863 - 2¹ = 16144631861 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 (16144631861) 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, 20332893 + ... + 20333686.

It is an arithmetic number, because the mean of its divisors is an integer number (4046324710).

Almost surely, 2^16144631863 is an apocalyptic number.

16144631863 is a deficient number, since it is larger than the sum of its proper divisors (40666977).

16144631863 is an equidigital number, since it uses as much as digits as its factorization.

16144631863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40666976.

The product of its digits is 248832, while the sum is 43.

The spelling of 16144631863 in words is "sixteen billion, one hundred forty-four million, six hundred thirty-one thousand, eight hundred sixty-three".