266616222604442 has 64 divisors (see below), whose sum is σ = 446535273913344. Its totient is φ = 118743202406400.

The previous prime is 266616222604427. The next prime is 266616222604469. The reversal of 266616222604442 is 244406222616662.

It is a super-2 number, since 2×266616222604442² (a number of 30 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116311178 + ... + 118581290.

It is an arithmetic number, because the mean of its divisors is an integer number (6977113654896).

Almost surely, 2^{266616222604442} is an apocalyptic number.

266616222604442 is a deficient number, since it is larger than the sum of its proper divisors (179919051308902).

266616222604442 is a wasteful number, since it uses less digits than its factorization.

266616222604442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271743.

The product of its (nonzero) digits is 15925248, while the sum is 53.

The spelling of 266616222604442 in words is "two hundred sixty-six trillion, six hundred sixteen billion, two hundred twenty-two million, six hundred four thousand, four hundred forty-two".