20115043843844 has 24 divisors (see below), whose sum is σ = 35954389107840. Its totient is φ = 9842410027296.

The previous prime is 20115043843831. The next prime is 20115043843879. The reversal of 20115043843844 is 44834834051102.

It is a super-2 number, since 2×20115043843844² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4443347 + ... + 7744250.

It is an arithmetic number, because the mean of its divisors is an integer number (1498099546160).

Almost surely, 2^{20115043843844} is an apocalyptic number.

It is an amenable number.

20115043843844 is a deficient number, since it is larger than the sum of its proper divisors (15839345263996).

20115043843844 is a wasteful number, since it uses less digits than its factorization.

20115043843844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12196427 (or 12196425 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 47.

Adding to 20115043843844 its reverse (44834834051102), we get a palindrome (64949877894946).

The spelling of 20115043843844 in words is "twenty trillion, one hundred fifteen billion, forty-three million, eight hundred forty-three thousand, eight hundred forty-four".