16439114644 has 12 divisors (see below), whose sum is σ = 28782080404. Its totient is φ = 8215663104.

The previous prime is 16439114641. The next prime is 16439114677. The reversal of 16439114644 is 44641193461.

It can be written as a sum of positive squares in 2 ways, for example, as 5683350544 + 10755764100 = 75388^2 + 103710^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16439114644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16439114641) 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, 964047 + ... + 980950.

Almost surely, 2^16439114644 is an apocalyptic number.

It is an amenable number.

16439114644 is a deficient number, since it is larger than the sum of its proper divisors (12342965760).

16439114644 is a wasteful number, since it uses less digits than its factorization.

16439114644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947114 (or 1947112 counting only the distinct ones).

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

The spelling of 16439114644 in words is "sixteen billion, four hundred thirty-nine million, one hundred fourteen thousand, six hundred forty-four".