20303040143444 has 12 divisors (see below), whose sum is σ = 35531120992500. Its totient is φ = 10151291288448.

The previous prime is 20303040143437. The next prime is 20303040143461. The reversal of 20303040143444 is 44434104030302.

It can be written as a sum of positive squares in 2 ways, for example, as 14870355564100 + 5432684579344 = 3856210^2 + 2330812^2 .

It is a super-2 number, since 2×20303040143444² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20303040143444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56996069 + ... + 57351180.

It is an arithmetic number, because the mean of its divisors is an integer number (2960926749375).

Almost surely, 2^{20303040143444} is an apocalyptic number.

It is an amenable number.

20303040143444 is a deficient number, since it is larger than the sum of its proper divisors (15228080849056).

20303040143444 is a wasteful number, since it uses less digits than its factorization.

20303040143444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114391642 (or 114391640 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 20303040143444 its reverse (44434104030302), we get a palindrome (64737144173746).

The spelling of 20303040143444 in words is "twenty trillion, three hundred three billion, forty million, one hundred forty-three thousand, four hundred forty-four".