545120262527021 has 2 divisors, whose sum is σ = 545120262527022. Its totient is φ = 545120262527020.

The previous prime is 545120262526969. The next prime is 545120262527129. The reversal of 545120262527021 is 120725262021545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 457660919646121 + 87459342880900 = 21393011^2 + 9351970^2 .

It is a cyclic number.

It is not a de Polignac number, because 545120262527021 - 2²² = 545120258332717 is a prime.

It is a super-3 number, since 3×545120262527021³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545120264527021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272560131263510 + 272560131263511.

It is an arithmetic number, because the mean of its divisors is an integer number (272560131263511).

Almost surely, 2^{545120262527021} is an apocalyptic number.

It is an amenable number.

545120262527021 is a deficient number, since it is larger than the sum of its proper divisors (1).

545120262527021 is an equidigital number, since it uses as much as digits as its factorization.

545120262527021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672000, while the sum is 44.

The spelling of 545120262527021 in words is "five hundred forty-five trillion, one hundred twenty billion, two hundred sixty-two million, five hundred twenty-seven thousand, twenty-one".