16144542631 has 4 divisors (see below), whose sum is σ = 18450905872. Its totient is φ = 13838179392.

The previous prime is 16144542599. The next prime is 16144542679. The reversal of 16144542631 is 13624544161.

16144542631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16144542631 - 2⁵ = 16144542599 is a prime.

It is a super-2 number, since 2×16144542631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16144542691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153181610 + ... + 1153181623.

It is an arithmetic number, because the mean of its divisors is an integer number (4612726468).

Almost surely, 2^16144542631 is an apocalyptic number.

16144542631 is a deficient number, since it is larger than the sum of its proper divisors (2306363241).

16144542631 is an equidigital number, since it uses as much as digits as its factorization.

16144542631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306363240.

The product of its digits is 69120, while the sum is 37.

The spelling of 16144542631 in words is "sixteen billion, one hundred forty-four million, five hundred forty-two thousand, six hundred thirty-one".