545044510215281 has 2 divisors, whose sum is σ = 545044510215282. Its totient is φ = 545044510215280.

The previous prime is 545044510215241. The next prime is 545044510215349. The reversal of 545044510215281 is 182512015440545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 474720604391056 + 70323905824225 = 21788084^2 + 8385935^2 .

It is a cyclic number.

It is not a de Polignac number, because 545044510215281 - 2³⁴ = 545027330346097 is a prime.

It is a super-2 number, since 2×545044510215281² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (545044510215221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272522255107640 + 272522255107641.

It is an arithmetic number, because the mean of its divisors is an integer number (272522255107641).

Almost surely, 2^{545044510215281} is an apocalyptic number.

It is an amenable number.

545044510215281 is a deficient number, since it is larger than the sum of its proper divisors (1).

545044510215281 is an equidigital number, since it uses as much as digits as its factorization.

545044510215281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280000, while the sum is 47.

The spelling of 545044510215281 in words is "five hundred forty-five trillion, forty-four billion, five hundred ten million, two hundred fifteen thousand, two hundred eighty-one".