20874443544440 has 16 divisors (see below), whose sum is σ = 46967497975080. Its totient is φ = 8349777417760.

The previous prime is 20874443544431. The next prime is 20874443544497. The reversal of 20874443544440 is 4444534447802.

It is a happy number.

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, 260930544266 + ... + 260930544345.

Almost surely, 2^{20874443544440} is an apocalyptic number.

20874443544440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20874443544440 is an abundant number, since it is smaller than the sum of its proper divisors (26093054430640).

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

20874443544440 is a wasteful number, since it uses less digits than its factorization.

20874443544440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521861088622 (or 521861088618 counting only the distinct ones).

The product of its (nonzero) digits is 27525120, while the sum is 53.

The spelling of 20874443544440 in words is "twenty trillion, eight hundred seventy-four billion, four hundred forty-three million, five hundred forty-four thousand, four hundred forty".