80833518891 has 8 divisors (see below), whose sum is σ = 119753361360. Its totient is φ = 53889012576.

The previous prime is 80833518869. The next prime is 80833518901. The reversal of 80833518891 is 19881533808.

80833518891 is a `hidden beast` number, since 8 + 0 + 8 + 33 + 518 + 8 + 91 = 666.

It is not a de Polignac number, because 80833518891 - 2⁹ = 80833518379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80833518391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1496916990 + ... + 1496917043.

It is an arithmetic number, because the mean of its divisors is an integer number (14969170170).

Almost surely, 2^80833518891 is an apocalyptic number.

80833518891 is a deficient number, since it is larger than the sum of its proper divisors (38919842469).

80833518891 is a wasteful number, since it uses less digits than its factorization.

80833518891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993834042 (or 2993834036 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 80833518891 in words is "eighty billion, eight hundred thirty-three million, five hundred eighteen thousand, eight hundred ninety-one".