491063791206 has 16 divisors (see below), whose sum is σ = 986782218048. Its totient is φ = 162912157800.

The previous prime is 491063791193. The next prime is 491063791213. The reversal of 491063791206 is 602197360194.

It is a super-2 number, since 2×491063791206² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193941780 + ... + 193944311.

It is an arithmetic number, because the mean of its divisors is an integer number (61673888628).

Almost surely, 2^491063791206 is an apocalyptic number.

491063791206 is an abundant number, since it is smaller than the sum of its proper divisors (495718426842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491063791206 is a wasteful number, since it uses less digits than its factorization.

491063791206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387886307.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 491063791206 in words is "four hundred ninety-one billion, sixty-three million, seven hundred ninety-one thousand, two hundred six".