491197824043 has 2 divisors, whose sum is σ = 491197824044. Its totient is φ = 491197824042.

The previous prime is 491197823993. The next prime is 491197824071. The reversal of 491197824043 is 340428791194.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491197824043 - 2⁹ = 491197823531 is a prime.

It is not a weakly prime, because it can be changed into another prime (491197924043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245598912021 + 245598912022.

It is an arithmetic number, because the mean of its divisors is an integer number (245598912022).

Almost surely, 2^491197824043 is an apocalyptic number.

491197824043 is a deficient number, since it is larger than the sum of its proper divisors (1).

491197824043 is an equidigital number, since it uses as much as digits as its factorization.

491197824043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 491197824043 in words is "four hundred ninety-one billion, one hundred ninety-seven million, eight hundred twenty-four thousand, forty-three".