811133498478241 has 4 divisors (see below), whose sum is σ = 811140406974612. Its totient is φ = 811126589981872.

The previous prime is 811133498478227. The next prime is 811133498478269. The reversal of 811133498478241 is 142874894331118.

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 372158885616400 + 438974612861841 = 19291420^2 + 20951721^2 .

It is a cyclic number.

It is not a de Polignac number, because 811133498478241 - 2³⁵ = 811099138739873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (811133498428241) 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, 3454072066 + ... + 3454306891.

It is an arithmetic number, because the mean of its divisors is an integer number (202785101743653).

Almost surely, 2^{811133498478241} is an apocalyptic number.

It is an amenable number.

811133498478241 is a deficient number, since it is larger than the sum of its proper divisors (6908496371).

811133498478241 is a wasteful number, since it uses less digits than its factorization.

811133498478241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6908496370.

The product of its digits is 37158912, while the sum is 64.

The spelling of 811133498478241 in words is "eight hundred eleven trillion, one hundred thirty-three billion, four hundred ninety-eight million, four hundred seventy-eight thousand, two hundred forty-one".