266670015190081 has 2 divisors, whose sum is σ = 266670015190082. Its totient is φ = 266670015190080.

The previous prime is 266670015190001. The next prime is 266670015190129. The reversal of 266670015190081 is 180091510076662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211248318259456 + 55421696930625 = 14534384^2 + 7444575^2 .

It is a cyclic number.

It is not a de Polignac number, because 266670015190081 - 2¹⁵ = 266670015157313 is a prime.

It is a super-2 number, since 2×266670015190081² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (266670015190001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133335007595040 + 133335007595041.

It is an arithmetic number, because the mean of its divisors is an integer number (133335007595041).

Almost surely, 2^{266670015190081} is an apocalyptic number.

It is an amenable number.

266670015190081 is a deficient number, since it is larger than the sum of its proper divisors (1).

266670015190081 is an equidigital number, since it uses as much as digits as its factorization.

266670015190081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 266670015190081 in words is "two hundred sixty-six trillion, six hundred seventy billion, fifteen million, one hundred ninety thousand, eighty-one".