494538670091 has 2 divisors, whose sum is σ = 494538670092. Its totient is φ = 494538670090.

The previous prime is 494538670079. The next prime is 494538670099. The reversal of 494538670091 is 190076835494.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 494538670091 - 2⁶ = 494538670027 is a prime.

It is not a weakly prime, because it can be changed into another prime (494538670099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247269335045 + 247269335046.

It is an arithmetic number, because the mean of its divisors is an integer number (247269335046).

Almost surely, 2^494538670091 is an apocalyptic number.

494538670091 is a deficient number, since it is larger than the sum of its proper divisors (1).

494538670091 is an equidigital number, since it uses as much as digits as its factorization.

494538670091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 494538670091 in words is "four hundred ninety-four billion, five hundred thirty-eight million, six hundred seventy thousand, ninety-one".