20444155713423 has 32 divisors (see below), whose sum is σ = 32618822604480. Its totient is φ = 12580491939840.

The previous prime is 20444155713403. The next prime is 20444155713431. The reversal of 20444155713423 is 32431755144402.

20444155713423 is a `hidden beast` number, since 2 + 0 + 4 + 4 + 4 + 155 + 71 + 3 + 423 = 666.

It is not a de Polignac number, because 20444155713423 - 2⁸ = 20444155713167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20444155713403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7255903 + ... + 9671423.

It is an arithmetic number, because the mean of its divisors is an integer number (1019338206390).

Almost surely, 2^{20444155713423} is an apocalyptic number.

20444155713423 is a deficient number, since it is larger than the sum of its proper divisors (12174666891057).

20444155713423 is a wasteful number, since it uses less digits than its factorization.

20444155713423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439656 (or 2439650 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 45.

The spelling of 20444155713423 in words is "twenty trillion, four hundred forty-four billion, one hundred fifty-five million, seven hundred thirteen thousand, four hundred twenty-three".