80889874993 has 4 divisors (see below), whose sum is σ = 80890657780. Its totient is φ = 80889092208.

The previous prime is 80889874973. The next prime is 80889875069. The reversal of 80889874993 is 39947898808.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 76337269264 + 4552605729 = 276292^2 + 67473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80889874993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80889874973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207630 + ... + 452647.

It is an arithmetic number, because the mean of its divisors is an integer number (20222664445).

Almost surely, 2^80889874993 is an apocalyptic number.

It is an amenable number.

80889874993 is a deficient number, since it is larger than the sum of its proper divisors (782787).

80889874993 is a wasteful number, since it uses less digits than its factorization.

80889874993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782786.

The product of its (nonzero) digits is 250822656, while the sum is 73.

The spelling of 80889874993 in words is "eighty billion, eight hundred eighty-nine million, eight hundred seventy-four thousand, nine hundred ninety-three".