2143731806446 has 16 divisors (see below), whose sum is σ = 3218604854400. Its totient is φ = 1070863784248.

The previous prime is 2143731806443. The next prime is 2143731806459. The reversal of 2143731806446 is 6446081373412.

It is a self number, because there is not a number n which added to its sum of digits gives 2143731806446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143731806443) 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 7 ways as a sum of consecutive naturals, for example, 17333295 + ... + 17456533.

It is an arithmetic number, because the mean of its divisors is an integer number (201162803400).

Almost surely, 2^{2143731806446} is an apocalyptic number.

2143731806446 is a deficient number, since it is larger than the sum of its proper divisors (1074873047954).

2143731806446 is a wasteful number, since it uses less digits than its factorization.

2143731806446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131303.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 2143731806446 in words is "two trillion, one hundred forty-three billion, seven hundred thirty-one million, eight hundred six thousand, four hundred forty-six".