2012844390144 has 144 divisors (see below), whose sum is σ = 6128951071488. Its totient is φ = 574483193856.

The previous prime is 2012844390101. The next prime is 2012844390209. The reversal of 2012844390144 is 4410934482102.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2012844390096 and 2012844390105.

It is a congruent number.

It is an unprimeable number.

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, 4837519 + ... + 5237105.

Almost surely, 2^{2012844390144} is an apocalyptic number.

2012844390144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2012844390144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3064475535744).

2012844390144 is an abundant number, since it is smaller than the sum of its proper divisors (4116106681344).

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

2012844390144 is an equidigital number, since it uses as much as digits as its factorization.

2012844390144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400550 (or 400536 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 2012844390144 in words is "two trillion, twelve billion, eight hundred forty-four million, three hundred ninety thousand, one hundred forty-four".