545443015324261 has 2 divisors, whose sum is σ = 545443015324262. Its totient is φ = 545443015324260.

The previous prime is 545443015324219. The next prime is 545443015324271. The reversal of 545443015324261 is 162423510344545.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 526389737944225 + 19053277380036 = 22943185^2 + 4365006^2 .

It is a cyclic number.

It is not a de Polignac number, because 545443015324261 - 2²³ = 545443006935653 is a prime.

It is a super-2 number, since 2×545443015324261² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545443015324201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272721507662130 + 272721507662131.

It is an arithmetic number, because the mean of its divisors is an integer number (272721507662131).

Almost surely, 2^{545443015324261} is an apocalyptic number.

It is an amenable number.

545443015324261 is a deficient number, since it is larger than the sum of its proper divisors (1).

545443015324261 is an equidigital number, since it uses as much as digits as its factorization.

545443015324261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912000, while the sum is 49.

The spelling of 545443015324261 in words is "five hundred forty-five trillion, four hundred forty-three billion, fifteen million, three hundred twenty-four thousand, two hundred sixty-one".