80264415521 has 2 divisors, whose sum is σ = 80264415522. Its totient is φ = 80264415520.

The previous prime is 80264415509. The next prime is 80264415523. The reversal of 80264415521 is 12551446208.

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., 55241921296 + 25022494225 = 235036^2 + 158185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80264415521 is a prime.

Together with 80264415523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80264415523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40132207760 + 40132207761.

It is an arithmetic number, because the mean of its divisors is an integer number (40132207761).

Almost surely, 2^80264415521 is an apocalyptic number.

It is an amenable number.

80264415521 is a deficient number, since it is larger than the sum of its proper divisors (1).

80264415521 is an equidigital number, since it uses as much as digits as its factorization.

80264415521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76800, while the sum is 38.

The spelling of 80264415521 in words is "eighty billion, two hundred sixty-four million, four hundred fifteen thousand, five hundred twenty-one".