80099521517 has 2 divisors, whose sum is σ = 80099521518. Its totient is φ = 80099521516.

The previous prime is 80099521501. The next prime is 80099521577. The reversal of 80099521517 is 71512599008.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79372356361 + 727165156 = 281731^2 + 26966^2 .

It is a cyclic number.

It is not a de Polignac number, because 80099521517 - 2⁴ = 80099521501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80099521577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40049760758 + 40049760759.

It is an arithmetic number, because the mean of its divisors is an integer number (40049760759).

Almost surely, 2^80099521517 is an apocalyptic number.

It is an amenable number.

80099521517 is a deficient number, since it is larger than the sum of its proper divisors (1).

80099521517 is an equidigital number, since it uses as much as digits as its factorization.

80099521517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 47.

The spelling of 80099521517 in words is "eighty billion, ninety-nine million, five hundred twenty-one thousand, five hundred seventeen".