545991508723 has 2 divisors, whose sum is σ = 545991508724. Its totient is φ = 545991508722.

The previous prime is 545991508709. The next prime is 545991508729. The reversal of 545991508723 is 327805199545.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545991508723 is a prime.

It is not a weakly prime, because it can be changed into another prime (545991508729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272995754361 + 272995754362.

It is an arithmetic number, because the mean of its divisors is an integer number (272995754362).

Almost surely, 2^545991508723 is an apocalyptic number.

545991508723 is a deficient number, since it is larger than the sum of its proper divisors (1).

545991508723 is an equidigital number, since it uses as much as digits as its factorization.

545991508723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608000, while the sum is 58.

The spelling of 545991508723 in words is "five hundred forty-five billion, nine hundred ninety-one million, five hundred eight thousand, seven hundred twenty-three".