491470787459 has 2 divisors, whose sum is σ = 491470787460. Its totient is φ = 491470787458.

The previous prime is 491470787447. The next prime is 491470787519. The reversal of 491470787459 is 954787074194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491470787459 - 2⁴ = 491470787443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 491470787395 and 491470787404.

It is not a weakly prime, because it can be changed into another prime (491470787359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245735393729 + 245735393730.

It is an arithmetic number, because the mean of its divisors is an integer number (245735393730).

Almost surely, 2^491470787459 is an apocalyptic number.

491470787459 is a deficient number, since it is larger than the sum of its proper divisors (1).

491470787459 is an equidigital number, since it uses as much as digits as its factorization.

491470787459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71124480, while the sum is 65.

The spelling of 491470787459 in words is "four hundred ninety-one billion, four hundred seventy million, seven hundred eighty-seven thousand, four hundred fifty-nine".