491478113039 has 2 divisors, whose sum is σ = 491478113040. Its totient is φ = 491478113038.

The previous prime is 491478113011. The next prime is 491478113059. The reversal of 491478113039 is 930311874194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491478113039 - 2²⁸ = 491209677583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (491478113059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245739056519 + 245739056520.

It is an arithmetic number, because the mean of its divisors is an integer number (245739056520).

Almost surely, 2^491478113039 is an apocalyptic number.

491478113039 is a deficient number, since it is larger than the sum of its proper divisors (1).

491478113039 is an equidigital number, since it uses as much as digits as its factorization.

491478113039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 491478113039 in words is "four hundred ninety-one billion, four hundred seventy-eight million, one hundred thirteen thousand, thirty-nine".