45199821497 has 2 divisors, whose sum is σ = 45199821498. Its totient is φ = 45199821496.

The previous prime is 45199821479. The next prime is 45199821509. The reversal of 45199821497 is 79412899154.

Together with previous prime (45199821479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42084060736 + 3115760761 = 205144^2 + 55819^2 .

It is a cyclic number.

It is not a de Polignac number, because 45199821497 - 2⁸ = 45199821241 is a prime.

It is not a weakly prime, because it can be changed into another prime (45199821437) 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, 22599910748 + 22599910749.

It is an arithmetic number, because the mean of its divisors is an integer number (22599910749).

Almost surely, 2^45199821497 is an apocalyptic number.

It is an amenable number.

45199821497 is a deficient number, since it is larger than the sum of its proper divisors (1).

45199821497 is an equidigital number, since it uses as much as digits as its factorization.

45199821497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 59.

The spelling of 45199821497 in words is "forty-five billion, one hundred ninety-nine million, eight hundred twenty-one thousand, four hundred ninety-seven".