80941256281 has 4 divisors (see below), whose sum is σ = 80941939200. Its totient is φ = 80940573364.

The previous prime is 80941256269. The next prime is 80941256317. The reversal of 80941256281 is 18265214908.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 80941256281 - 2²¹ = 80939159129 is a prime.

It is a super-2 number, since 2×80941256281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80941556281) 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 3 ways as a sum of consecutive naturals, for example, 112501 + ... + 417778.

It is an arithmetic number, because the mean of its divisors is an integer number (20235484800).

Almost surely, 2^80941256281 is an apocalyptic number.

It is an amenable number.

80941256281 is a deficient number, since it is larger than the sum of its proper divisors (682919).

80941256281 is a wasteful number, since it uses less digits than its factorization.

80941256281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682918.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 80941256281 in words is "eighty billion, nine hundred forty-one million, two hundred fifty-six thousand, two hundred eighty-one".