80197899248391 has 16 divisors (see below), whose sum is σ = 110440529143776. Its totient is φ = 51737905529856.

The previous prime is 80197899248359. The next prime is 80197899248443. The reversal of 80197899248391 is 19384299879108.

It is not a de Polignac number, because 80197899248391 - 2⁵ = 80197899248359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80197899248191) 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, 3454709650 + ... + 3454732863.

It is an arithmetic number, because the mean of its divisors is an integer number (6902533071486).

Almost surely, 2^{80197899248391} is an apocalyptic number.

80197899248391 is a deficient number, since it is larger than the sum of its proper divisors (30242629895385).

80197899248391 is a wasteful number, since it uses less digits than its factorization.

80197899248391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6909442642.

The product of its (nonzero) digits is 564350976, while the sum is 78.

The spelling of 80197899248391 in words is "eighty trillion, one hundred ninety-seven billion, eight hundred ninety-nine million, two hundred forty-eight thousand, three hundred ninety-one".