20872140380444 has 12 divisors (see below), whose sum is σ = 37785771378600. Its totient is φ = 10076205700848.

The previous prime is 20872140380423. The next prime is 20872140380453. The reversal of 20872140380444 is 44408304127802.

It is a super-2 number, since 2×20872140380444² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89966122214 + ... + 89966122445.

It is an arithmetic number, because the mean of its divisors is an integer number (3148814281550).

Almost surely, 2^{20872140380444} is an apocalyptic number.

It is an amenable number.

20872140380444 is a deficient number, since it is larger than the sum of its proper divisors (16913630998156).

20872140380444 is a wasteful number, since it uses less digits than its factorization.

20872140380444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179932244692 (or 179932244690 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 47.

The spelling of 20872140380444 in words is "twenty trillion, eight hundred seventy-two billion, one hundred forty million, three hundred eighty thousand, four hundred forty-four".