80719081 has 4 divisors (see below), whose sum is σ = 80939392. Its totient is φ = 80498772.

The previous prime is 80719063. The next prime is 80719091. The reversal of 80719081 is 18091708.

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 not a de Polignac number, because 80719081 - 2¹⁵ = 80686313 is a prime.

It is a super-2 number, since 2×80719081² = 13031140074969122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80719031) 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, 109605 + ... + 110338.

It is an arithmetic number, because the mean of its divisors is an integer number (20234848).

Almost surely, 2^80719081 is an apocalyptic number.

It is an amenable number.

80719081 is a deficient number, since it is larger than the sum of its proper divisors (220311).

80719081 is a wasteful number, since it uses less digits than its factorization.

80719081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220310.

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 80719081 is about 8984.3798339117. The cubic root of 80719081 is about 432.1740999941.

The spelling of 80719081 in words is "eighty million, seven hundred nineteen thousand, eighty-one".