811968910494 has 16 divisors (see below), whose sum is σ = 1855928938368. Its totient is φ = 231991117272.

The previous prime is 811968910481. The next prime is 811968910573. The reversal of 811968910494 is 494019869118.

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, 9666296512 + ... + 9666296595.

It is an arithmetic number, because the mean of its divisors is an integer number (115995558648).

Almost surely, 2^811968910494 is an apocalyptic number.

811968910494 is an abundant number, since it is smaller than the sum of its proper divisors (1043960027874).

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

811968910494 is a wasteful number, since it uses less digits than its factorization.

811968910494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19332593119.

The product of its (nonzero) digits is 4478976, while the sum is 60.

The spelling of 811968910494 in words is "eight hundred eleven billion, nine hundred sixty-eight million, nine hundred ten thousand, four hundred ninety-four".