266684120928 has 192 divisors, whose sum is σ = 809801334720. Its totient is φ = 85306576896.

The previous prime is 266684120881. The next prime is 266684120929. The reversal of 266684120928 is 829021486662.

It is a super-2 number, since 2×266684120928² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266684120929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2276526 + ... + 2390802.

It is an arithmetic number, because the mean of its divisors is an integer number (4217715285).

Almost surely, 2^266684120928 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 266684120928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404900667360).

266684120928 is an abundant number, since it is smaller than the sum of its proper divisors (543117213792).

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

266684120928 is a wasteful number, since it uses less digits than its factorization.

266684120928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114406 (or 114392 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 266684120928 in words is "two hundred sixty-six billion, six hundred eighty-four million, one hundred twenty thousand, nine hundred twenty-eight".