491470787443 has 2 divisors, whose sum is σ = 491470787444. Its totient is φ = 491470787442.

The previous prime is 491470787413. The next prime is 491470787447. The reversal of 491470787443 is 344787074194.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491470787443 is a prime.

It is not a weakly prime, because it can be changed into another prime (491470787447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245735393721 + 245735393722.

It is an arithmetic number, because the mean of its divisors is an integer number (245735393722).

Almost surely, 2^491470787443 is an apocalyptic number.

491470787443 is a deficient number, since it is larger than the sum of its proper divisors (1).

491470787443 is an equidigital number, since it uses as much as digits as its factorization.

491470787443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18966528, while the sum is 58.

The spelling of 491470787443 in words is "four hundred ninety-one billion, four hundred seventy million, seven hundred eighty-seven thousand, four hundred forty-three".