16144635013 has 4 divisors (see below), whose sum is σ = 17386530028. Its totient is φ = 14902740000.

The previous prime is 16144634941. The next prime is 16144635041. The reversal of 16144635013 is 31053644161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5883350209 + 10261284804 = 76703^2 + 101298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16144635013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16144635013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16144635043) 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, 620947488 + ... + 620947513.

It is an arithmetic number, because the mean of its divisors is an integer number (4346632507).

Almost surely, 2^16144635013 is an apocalyptic number.

16144635013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16144635013 is a deficient number, since it is larger than the sum of its proper divisors (1241895015).

16144635013 is a wasteful number, since it uses less digits than its factorization.

16144635013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241895014.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 16144635013 in words is "sixteen billion, one hundred forty-four million, six hundred thirty-five thousand, thirteen".