545643565451 has 2 divisors, whose sum is σ = 545643565452. Its totient is φ = 545643565450.

The previous prime is 545643565433. The next prime is 545643565549. The reversal of 545643565451 is 154565346545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545643565451 - 2¹⁸ = 545643303307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 545643565393 and 545643565402.

It is not a weakly prime, because it can be changed into another prime (545643565651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272821782725 + 272821782726.

It is an arithmetic number, because the mean of its divisors is an integer number (272821782726).

Almost surely, 2^545643565451 is an apocalyptic number.

545643565451 is a deficient number, since it is larger than the sum of its proper divisors (1).

545643565451 is an equidigital number, since it uses as much as digits as its factorization.

545643565451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600000, while the sum is 53.

The spelling of 545643565451 in words is "five hundred forty-five billion, six hundred forty-three million, five hundred sixty-five thousand, four hundred fifty-one".