20144090283439 has 16 divisors (see below), whose sum is σ = 20408180746464. Its totient is φ = 19880515584000.

The previous prime is 20144090283431. The next prime is 20144090283451. The reversal of 20144090283439 is 93438209044102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20144090283439 - 2³ = 20144090283431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20144090283392 and 20144090283401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144090283431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637435239 + ... + 637466839.

It is an arithmetic number, because the mean of its divisors is an integer number (1275511296654).

Almost surely, 2^{20144090283439} is an apocalyptic number.

20144090283439 is a deficient number, since it is larger than the sum of its proper divisors (264090463025).

20144090283439 is a wasteful number, since it uses less digits than its factorization.

20144090283439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39498.

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 20144090283439 in words is "twenty trillion, one hundred forty-four billion, ninety million, two hundred eighty-three thousand, four hundred thirty-nine".