2003144394864 has 20 divisors (see below), whose sum is σ = 5174789686856. Its totient is φ = 667714798272.

The previous prime is 2003144394793. The next prime is 2003144394907. The reversal of 2003144394864 is 4684934413002.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 41732174893 = 2003144394864 / (2 + 0 + 0 + 3 + 1 + 4 + 4 + 3 + 9 + 4 + 8 + 6 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20866087399 + ... + 20866087494.

Almost surely, 2^{2003144394864} is an apocalyptic number.

2003144394864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2003144394864 is an abundant number, since it is smaller than the sum of its proper divisors (3171645291992).

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

2003144394864 is a wasteful number, since it uses less digits than its factorization.

2003144394864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41732174904 (or 41732174898 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 48.

The spelling of 2003144394864 in words is "two trillion, three billion, one hundred forty-four million, three hundred ninety-four thousand, eight hundred sixty-four".