20044138285 has 8 divisors (see below), whose sum is σ = 24093531000. Its totient is φ = 16008267264.

The previous prime is 20044138277. The next prime is 20044138333. The reversal of 20044138285 is 58283144002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1790244 + 20042348041 = 1338^2 + 141571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20044138285 - 2³ = 20044138277 is a prime.

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, 3377160 + ... + 3383089.

It is an arithmetic number, because the mean of its divisors is an integer number (3011691375).

Almost surely, 2^20044138285 is an apocalyptic number.

It is an amenable number.

20044138285 is a deficient number, since it is larger than the sum of its proper divisors (4049392715).

20044138285 is an equidigital number, since it uses as much as digits as its factorization.

20044138285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760847.

The product of its (nonzero) digits is 61440, while the sum is 37.

The spelling of 20044138285 in words is "twenty billion, forty-four million, one hundred thirty-eight thousand, two hundred eighty-five".