20444143010240 has 56 divisors (see below), whose sum is σ = 48813132223680. Its totient is φ = 8155733142528.

The previous prime is 20444143010233. The next prime is 20444143010251. The reversal of 20444143010240 is 4201034144402.

It is a congruent number.

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, 85521320 + ... + 85760039.

Almost surely, 2^{20444143010240} is an apocalyptic number.

20444143010240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20444143010240 is an abundant number, since it is smaller than the sum of its proper divisors (28368989213440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20444143010240 is a wasteful number, since it uses less digits than its factorization.

20444143010240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171281749 (or 171281739 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 20444143010240 its reverse (4201034144402), we get a palindrome (24645177154642).

The spelling of 20444143010240 in words is "twenty trillion, four hundred forty-four billion, one hundred forty-three million, ten thousand, two hundred forty".