266044040644 has 24 divisors (see below), whose sum is σ = 488415009600. Its totient is φ = 126626105760.

The previous prime is 266044040569. The next prime is 266044040657. The reversal of 266044040644 is 446040440662.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 266044040597 and 266044040606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16143054 + ... + 16159525.

It is an arithmetic number, because the mean of its divisors is an integer number (20350625400).

Almost surely, 2^266044040644 is an apocalyptic number.

It is an amenable number.

266044040644 is a deficient number, since it is larger than the sum of its proper divisors (222370968956).

266044040644 is a wasteful number, since it uses less digits than its factorization.

266044040644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32302683 (or 32302681 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 266044040644 in words is "two hundred sixty-six billion, forty-four million, forty thousand, six hundred forty-four".