80171308491 has 64 divisors (see below), whose sum is σ = 118705305600. Its totient is φ = 47900160000.

The previous prime is 80171308453. The next prime is 80171308499. The reversal of 80171308491 is 19480317108.

It is not a de Polignac number, because 80171308491 - 2¹⁰ = 80171307467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80171308499) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98854476 + ... + 98855286.

It is an arithmetic number, because the mean of its divisors is an integer number (1854770400).

Almost surely, 2^80171308491 is an apocalyptic number.

80171308491 is a deficient number, since it is larger than the sum of its proper divisors (38533997109).

80171308491 is a wasteful number, since it uses less digits than its factorization.

80171308491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1700.

The product of its (nonzero) digits is 48384, while the sum is 42.

The spelling of 80171308491 in words is "eighty billion, one hundred seventy-one million, three hundred eight thousand, four hundred ninety-one".