810416909091 has 4 divisors (see below), whose sum is σ = 1080555878792. Its totient is φ = 540277939392.

The previous prime is 810416909087. The next prime is 810416909117. The reversal of 810416909091 is 190909614018.

It is a happy number.

810416909091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 810416909091 - 2² = 810416909087 is a prime.

It is a super-2 number, since 2×810416909091² (a number of 25 digits) contains 22 as substring.

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 810416909091.

It is not an unprimeable number, because it can be changed into a prime (810416909041) 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, 135069484846 + ... + 135069484851.

It is an arithmetic number, because the mean of its divisors is an integer number (270138969698).

Almost surely, 2^810416909091 is an apocalyptic number.

810416909091 is a deficient number, since it is larger than the sum of its proper divisors (270138969701).

810416909091 is a wasteful number, since it uses less digits than its factorization.

810416909091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270138969700.

The product of its (nonzero) digits is 139968, while the sum is 48.

The spelling of 810416909091 in words is "eight hundred ten billion, four hundred sixteen million, nine hundred nine thousand, ninety-one".