266021666120662 has 4 divisors (see below), whose sum is σ = 399032499180996. Its totient is φ = 133010833060330.

The previous prime is 266021666120659. The next prime is 266021666120663.

266021666120662 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×266021666120662² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266021666120663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66505416530164 + ... + 66505416530167.

It is an arithmetic number, because the mean of its divisors is an integer number (99758124795249).

Almost surely, 2^{266021666120662} is an apocalyptic number.

266021666120662 is a deficient number, since it is larger than the sum of its proper divisors (133010833060334).

266021666120662 is a wasteful number, since it uses less digits than its factorization.

266021666120662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133010833060333.

The product of its (nonzero) digits is 4478976, while the sum is 52.

The spelling of 266021666120662 in words is "two hundred sixty-six trillion, twenty-one billion, six hundred sixty-six million, one hundred twenty thousand, six hundred sixty-two".