811444148107 has 4 divisors (see below), whose sum is σ = 811445951680. Its totient is φ = 811442344536.

The previous prime is 811444148057. The next prime is 811444148171. The reversal of 811444148107 is 701841444118.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 701841444118 = 2 ⋅350920722059.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-811444148107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811144148107) 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, 387718 + ... + 1331620.

It is an arithmetic number, because the mean of its divisors is an integer number (202861487920).

Almost surely, 2^811444148107 is an apocalyptic number.

811444148107 is a deficient number, since it is larger than the sum of its proper divisors (1803573).

811444148107 is an equidigital number, since it uses as much as digits as its factorization.

811444148107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803572.

The product of its (nonzero) digits is 114688, while the sum is 43.

The spelling of 811444148107 in words is "eight hundred eleven billion, four hundred forty-four million, one hundred forty-eight thousand, one hundred seven".