666026265241227 has 16 divisors (see below), whose sum is σ = 968959735120512. Its totient is φ = 403571340961920.

The previous prime is 666026265241223. The next prime is 666026265241229. The reversal of 666026265241227 is 722142562620666.

It is a happy number.

It is not a de Polignac number, because 666026265241227 - 2² = 666026265241223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666026265241223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2023357998 + ... + 2023687139.

It is an arithmetic number, because the mean of its divisors is an integer number (60559983445032).

Almost surely, 2^{666026265241227} is an apocalyptic number.

666026265241227 is a deficient number, since it is larger than the sum of its proper divisors (302933469879285).

666026265241227 is a wasteful number, since it uses less digits than its factorization.

666026265241227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4047050138.

The product of its (nonzero) digits is 34836480, while the sum is 57.

The spelling of 666026265241227 in words is "six hundred sixty-six trillion, twenty-six billion, two hundred sixty-five million, two hundred forty-one thousand, two hundred twenty-seven".