810691377341 has 4 divisors (see below), whose sum is σ = 810772675932. Its totient is φ = 810610078752.

The previous prime is 810691377337. The next prime is 810691377367. The reversal of 810691377341 is 143773196018.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 544982056441 + 265709320900 = 738229^2 + 515470^2 .

It is a cyclic number.

It is not a de Polignac number, because 810691377341 - 2² = 810691377337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 810691377341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810691377311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40634336 + ... + 40654281.

It is an arithmetic number, because the mean of its divisors is an integer number (202693168983).

Almost surely, 2^810691377341 is an apocalyptic number.

It is an amenable number.

810691377341 is a deficient number, since it is larger than the sum of its proper divisors (81298591).

810691377341 is an equidigital number, since it uses as much as digits as its factorization.

810691377341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81298590.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 810691377341 in words is "eight hundred ten billion, six hundred ninety-one million, three hundred seventy-seven thousand, three hundred forty-one".