20444143305940 has 24 divisors (see below), whose sum is σ = 44317626780672. Its totient is φ = 7913861924640.

The previous prime is 20444143305919. The next prime is 20444143305941. The reversal of 20444143305940 is 4950334144402.

It is a super-2 number, since 2×20444143305940² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444143305941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16487211724 + ... + 16487212963.

It is an arithmetic number, because the mean of its divisors is an integer number (1846567782528).

Almost surely, 2^{20444143305940} is an apocalyptic number.

20444143305940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20444143305940 is an abundant number, since it is smaller than the sum of its proper divisors (23873483474732).

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

20444143305940 is a wasteful number, since it uses less digits than its factorization.

20444143305940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32974424727 (or 32974424725 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 20444143305940 in words is "twenty trillion, four hundred forty-four billion, one hundred forty-three million, three hundred five thousand, nine hundred forty".