20144090283438 has 16 divisors (see below), whose sum is σ = 43950742436736. Its totient is φ = 6104269782840.

The previous prime is 20144090283431. The next prime is 20144090283451. The reversal of 20144090283438 is 83438209044102.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152606744506 + ... + 152606744637.

It is an arithmetic number, because the mean of its divisors is an integer number (2746921402296).

Almost surely, 2^{20144090283438} is an apocalyptic number.

20144090283438 is an abundant number, since it is smaller than the sum of its proper divisors (23806652153298).

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

20144090283438 is a wasteful number, since it uses less digits than its factorization.

20144090283438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305213489159.

The product of its (nonzero) digits is 1327104, while the sum is 48.

It can be divided in two parts, 201440 and 90283438, that added together give a triangular number (90484878 = T₁₃₄₅₂).

The spelling of 20144090283438 in words is "twenty trillion, one hundred forty-four billion, ninety million, two hundred eighty-three thousand, four hundred thirty-eight".