810664105715 has 16 divisors (see below), whose sum is σ = 999120478080. Its totient is φ = 630983364480.

The previous prime is 810664105679. The next prime is 810664105747. The reversal of 810664105715 is 517501466018.

It is not a de Polignac number, because 810664105715 - 2¹⁸ = 810663843571 is a prime.

It is a super-2 number, since 2×810664105715² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8849045 + ... + 8940185.

It is an arithmetic number, because the mean of its divisors is an integer number (62445029880).

Almost surely, 2^810664105715 is an apocalyptic number.

810664105715 is a deficient number, since it is larger than the sum of its proper divisors (188456372365).

810664105715 is a wasteful number, since it uses less digits than its factorization.

810664105715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139262.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 810664105715 in words is "eight hundred ten billion, six hundred sixty-four million, one hundred five thousand, seven hundred fifteen".