80099521577 has 2 divisors, whose sum is σ = 80099521578. Its totient is φ = 80099521576.

The previous prime is 80099521517. The next prime is 80099521597. The reversal of 80099521577 is 77512599008.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78410640361 + 1688881216 = 280019^2 + 41096^2 .

It is a cyclic number.

It is not a de Polignac number, because 80099521577 - 2²⁰ = 80098473001 is a prime.

It is not a weakly prime, because it can be changed into another prime (80099521517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40049760788 + 40049760789.

It is an arithmetic number, because the mean of its divisors is an integer number (40049760789).

Almost surely, 2^80099521577 is an apocalyptic number.

It is an amenable number.

80099521577 is a deficient number, since it is larger than the sum of its proper divisors (1).

80099521577 is an equidigital number, since it uses as much as digits as its factorization.

80099521577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1587600, while the sum is 53.

The spelling of 80099521577 in words is "eighty billion, ninety-nine million, five hundred twenty-one thousand, five hundred seventy-seven".