80415998197 has 2 divisors, whose sum is σ = 80415998198. Its totient is φ = 80415998196.

The previous prime is 80415998191. The next prime is 80415998219. The reversal of 80415998197 is 79189951408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73632993316 + 6783004881 = 271354^2 + 82359^2 .

It is a cyclic number.

It is not a de Polignac number, because 80415998197 - 2²³ = 80407609589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80415998191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40207999098 + 40207999099.

It is an arithmetic number, because the mean of its divisors is an integer number (40207999099).

Almost surely, 2^80415998197 is an apocalyptic number.

It is an amenable number.

80415998197 is a deficient number, since it is larger than the sum of its proper divisors (1).

80415998197 is an equidigital number, since it uses as much as digits as its factorization.

80415998197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 61.

The spelling of 80415998197 in words is "eighty billion, four hundred fifteen million, nine hundred ninety-eight thousand, one hundred ninety-seven".