2149871003663 has 4 divisors (see below), whose sum is σ = 2149920219888. Its totient is φ = 2149821787440.

The previous prime is 2149871003641. The next prime is 2149871003669. The reversal of 2149871003663 is 3663001789412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2149871003663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149871003669) by changing a digit.

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, 24542531 + ... + 24629972.

It is an arithmetic number, because the mean of its divisors is an integer number (537480054972).

Almost surely, 2^{2149871003663} is an apocalyptic number.

2149871003663 is a deficient number, since it is larger than the sum of its proper divisors (49216225).

2149871003663 is an equidigital number, since it uses as much as digits as its factorization.

2149871003663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49216224.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 2149871003663 in words is "two trillion, one hundred forty-nine billion, eight hundred seventy-one million, three thousand, six hundred sixty-three".