491140101859 has 32 divisors (see below), whose sum is σ = 582960001536. Its totient is φ = 408643960320.

The previous prime is 491140101857. The next prime is 491140101869. The reversal of 491140101859 is 958101041194.

It is not a de Polignac number, because 491140101859 - 2¹ = 491140101857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491140101857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13175922 + ... + 13213144.

It is an arithmetic number, because the mean of its divisors is an integer number (18217500048).

Almost surely, 2^491140101859 is an apocalyptic number.

491140101859 is a deficient number, since it is larger than the sum of its proper divisors (91819899677).

491140101859 is a wasteful number, since it uses less digits than its factorization.

491140101859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39195.

The product of its (nonzero) digits is 51840, while the sum is 43.

The spelling of 491140101859 in words is "four hundred ninety-one billion, one hundred forty million, one hundred one thousand, eight hundred fifty-nine".