545311705481 has 2 divisors, whose sum is σ = 545311705482. Its totient is φ = 545311705480.

The previous prime is 545311705469. The next prime is 545311705531. The reversal of 545311705481 is 184507113545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 489055455625 + 56256249856 = 699325^2 + 237184^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545311705481 is a prime.

It is a super-2 number, since 2×545311705481² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (545311705441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272655852740 + 272655852741.

It is an arithmetic number, because the mean of its divisors is an integer number (272655852741).

Almost surely, 2^545311705481 is an apocalyptic number.

It is an amenable number.

545311705481 is a deficient number, since it is larger than the sum of its proper divisors (1).

545311705481 is an equidigital number, since it uses as much as digits as its factorization.

545311705481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336000, while the sum is 44.

The spelling of 545311705481 in words is "five hundred forty-five billion, three hundred eleven million, seven hundred five thousand, four hundred eighty-one".