80716191 has 16 divisors (see below), whose sum is σ = 110246400. Its totient is φ = 52509600.

The previous prime is 80716183. The next prime is 80716211. The reversal of 80716191 is 19161708.

It is not a de Polignac number, because 80716191 - 2³ = 80716183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80716171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30366 + ... + 32916.

It is an arithmetic number, because the mean of its divisors is an integer number (6890400).

Almost surely, 2^80716191 is an apocalyptic number.

80716191 is a deficient number, since it is larger than the sum of its proper divisors (29530209).

80716191 is a wasteful number, since it uses less digits than its factorization.

80716191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 80716191 is about 8984.2189977760. The cubic root of 80716191 is about 432.1689421965.

Adding to 80716191 its reverse (19161708), we get a palindrome (99877899).

The spelling of 80716191 in words is "eighty million, seven hundred sixteen thousand, one hundred ninety-one".