545991508729 has 2 divisors, whose sum is σ = 545991508730. Its totient is φ = 545991508728.

The previous prime is 545991508723. The next prime is 545991508757. The reversal of 545991508729 is 927805199545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402365668329 + 143625840400 = 634323^2 + 378980^2 .

It is a cyclic number.

It is not a de Polignac number, because 545991508729 - 2¹¹ = 545991506681 is a prime.

It is not a weakly prime, because it can be changed into another prime (545991508723) 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, 272995754364 + 272995754365.

It is an arithmetic number, because the mean of its divisors is an integer number (272995754365).

Almost surely, 2^545991508729 is an apocalyptic number.

It is an amenable number.

545991508729 is a deficient number, since it is larger than the sum of its proper divisors (1).

545991508729 is an equidigital number, since it uses as much as digits as its factorization.

545991508729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824000, while the sum is 64.

The spelling of 545991508729 in words is "five hundred forty-five billion, nine hundred ninety-one million, five hundred eight thousand, seven hundred twenty-nine".