2001332497943 has 2 divisors, whose sum is σ = 2001332497944. Its totient is φ = 2001332497942.

The previous prime is 2001332497909. The next prime is 2001332497999. The reversal of 2001332497943 is 3497942331002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001332497943 - 2⁸ = 2001332497687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001332497343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000666248971 + 1000666248972.

It is an arithmetic number, because the mean of its divisors is an integer number (1000666248972).

Almost surely, 2^{2001332497943} is an apocalyptic number.

2001332497943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001332497943 is an equidigital number, since it uses as much as digits as its factorization.

2001332497943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 47.

The spelling of 2001332497943 in words is "two trillion, one billion, three hundred thirty-two million, four hundred ninety-seven thousand, nine hundred forty-three".