266554214122673 has 2 divisors, whose sum is σ = 266554214122674. Its totient is φ = 266554214122672.

The previous prime is 266554214122667. The next prime is 266554214122681. The reversal of 266554214122673 is 376221412455662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152299984816144 + 114254229306529 = 12340988^2 + 10688977^2 .

It is a cyclic number.

It is not a de Polignac number, because 266554214122673 - 2³⁴ = 266537034253489 is a prime.

It is a super-2 number, since 2×266554214122673² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (266554214122373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133277107061336 + 133277107061337.

It is an arithmetic number, because the mean of its divisors is an integer number (133277107061337).

Almost surely, 2^{266554214122673} is an apocalyptic number.

It is an amenable number.

266554214122673 is a deficient number, since it is larger than the sum of its proper divisors (1).

266554214122673 is an equidigital number, since it uses as much as digits as its factorization.

266554214122673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29030400, while the sum is 56.

The spelling of 266554214122673 in words is "two hundred sixty-six trillion, five hundred fifty-four billion, two hundred fourteen million, one hundred twenty-two thousand, six hundred seventy-three".