80817221043 has 64 divisors (see below), whose sum is σ = 136884142080. Its totient is φ = 46684629504.

The previous prime is 80817221033. The next prime is 80817221071. The reversal of 80817221043 is 34012271808.

It is not a de Polignac number, because 80817221043 - 2⁵ = 80817221011 is a prime.

It is a super-2 number, since 2×80817221043² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80817220989 and 80817221007.

It is not an unprimeable number, because it can be changed into a prime (80817221003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2267680 + ... + 2303042.

It is an arithmetic number, because the mean of its divisors is an integer number (2138814720).

Almost surely, 2^80817221043 is an apocalyptic number.

80817221043 is a deficient number, since it is larger than the sum of its proper divisors (56066921037).

80817221043 is a wasteful number, since it uses less digits than its factorization.

80817221043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35785 (or 35779 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 80817221043 in words is "eighty billion, eight hundred seventeen million, two hundred twenty-one thousand, forty-three".