2001504785843 has 2 divisors, whose sum is σ = 2001504785844. Its totient is φ = 2001504785842.

The previous prime is 2001504785801. The next prime is 2001504785849. The reversal of 2001504785843 is 3485874051002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001504785843 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001504785849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000752392921 + 1000752392922.

It is an arithmetic number, because the mean of its divisors is an integer number (1000752392922).

Almost surely, 2^{2001504785843} is an apocalyptic number.

2001504785843 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001504785843 is an equidigital number, since it uses as much as digits as its factorization.

2001504785843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1075200, while the sum is 47.

The spelling of 2001504785843 in words is "two trillion, one billion, five hundred four million, seven hundred eighty-five thousand, eight hundred forty-three".