545020311061 has 2 divisors, whose sum is σ = 545020311062. Its totient is φ = 545020311060.

The previous prime is 545020311023. The next prime is 545020311109. The reversal of 545020311061 is 160113020545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435823108561 + 109197202500 = 660169^2 + 330450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545020311061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545020311761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272510155530 + 272510155531.

It is an arithmetic number, because the mean of its divisors is an integer number (272510155531).

Almost surely, 2^545020311061 is an apocalyptic number.

It is an amenable number.

545020311061 is a deficient number, since it is larger than the sum of its proper divisors (1).

545020311061 is an equidigital number, since it uses as much as digits as its factorization.

545020311061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 545020311061 in words is "five hundred forty-five billion, twenty million, three hundred eleven thousand, sixty-one".