266081371 has 2 divisors, whose sum is σ = 266081372. Its totient is φ = 266081370.

The previous prime is 266081323. The next prime is 266081381. The reversal of 266081371 is 173180662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 266081371 - 2²¹ = 263984219 is a prime.

It is equal to p_14509753 and since 266081371 and 14509753 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (266081311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133040685 + 133040686.

It is an arithmetic number, because the mean of its divisors is an integer number (133040686).

Almost surely, 2^266081371 is an apocalyptic number.

266081371 is a deficient number, since it is larger than the sum of its proper divisors (1).

266081371 is an equidigital number, since it uses as much as digits as its factorization.

266081371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 266081371 is about 16312.0008276116. Note that the first 3 decimals coincide. The cubic root of 266081371 is about 643.1883308256.

The spelling of 266081371 in words is "two hundred sixty-six million, eighty-one thousand, three hundred seventy-one".