266675656644 has 192 divisors, whose sum is σ = 781440307200. Its totient is φ = 78142579200.

The previous prime is 266675656631. The next prime is 266675656759. The reversal of 266675656644 is 446656576662.

266675656644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×266675656644² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2422929 + ... + 2530599.

It is an arithmetic number, because the mean of its divisors is an integer number (4070001600).

Almost surely, 2^266675656644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266675656644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390720153600).

266675656644 is an abundant number, since it is smaller than the sum of its proper divisors (514764650556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266675656644 is a wasteful number, since it uses less digits than its factorization.

266675656644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107791 (or 107783 counting only the distinct ones).

The product of its digits is 261273600, while the sum is 63.

The spelling of 266675656644 in words is "two hundred sixty-six billion, six hundred seventy-five million, six hundred fifty-six thousand, six hundred forty-four".