80916114581 has 4 divisors (see below), whose sum is σ = 81076982112. Its totient is φ = 80755247052.

The previous prime is 80916114569. The next prime is 80916114583. The reversal of 80916114581 is 18541161908.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80916114581 is a prime.

It is a super-2 number, since 2×80916114581² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80916114583) 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, 80433011 + ... + 80434016.

It is an arithmetic number, because the mean of its divisors is an integer number (20269245528).

Almost surely, 2^80916114581 is an apocalyptic number.

It is an amenable number.

80916114581 is a deficient number, since it is larger than the sum of its proper divisors (160867531).

80916114581 is a wasteful number, since it uses less digits than its factorization.

80916114581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160867530.

The product of its (nonzero) digits is 69120, while the sum is 44.

The spelling of 80916114581 in words is "eighty billion, nine hundred sixteen million, one hundred fourteen thousand, five hundred eighty-one".