4545459549991 has 2 divisors, whose sum is σ = 4545459549992. Its totient is φ = 4545459549990.

The previous prime is 4545459549971. The next prime is 4545459550043. The reversal of 4545459549991 is 1999459545454.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4545459549991 - 2⁹ = 4545459549479 is a prime.

It is a super-2 number, since 2×4545459549991² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4545459549901) 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, 2272729774995 + 2272729774996.

It is an arithmetic number, because the mean of its divisors is an integer number (2272729774996).

Almost surely, 2^{4545459549991} is an apocalyptic number.

4545459549991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4545459549991 is an equidigital number, since it uses as much as digits as its factorization.

4545459549991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760000, while the sum is 73.

The spelling of 4545459549991 in words is "four trillion, five hundred forty-five billion, four hundred fifty-nine million, five hundred forty-nine thousand, nine hundred ninety-one".