266867923968 has 440 divisors, whose sum is σ = 846019532160. Its totient is φ = 83610869760.

The previous prime is 266867923957. The next prime is 266867923999. The reversal of 266867923968 is 869329768662.

266867923968 is a `hidden beast` number, since 266 + 8 + 6 + 79 + 239 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 266867923896 and 266867923905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 112553823 + ... + 112556193.

It is an arithmetic number, because the mean of its divisors is an integer number (1922771664).

Almost surely, 2^266867923968 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 266867923968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423009766080).

266867923968 is an abundant number, since it is smaller than the sum of its proper divisors (579151608192).

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

266867923968 is a wasteful number, since it uses less digits than its factorization.

266867923968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485 (or 2458 counting only the distinct ones).

The product of its digits is 564350976, while the sum is 72.

The spelling of 266867923968 in words is "two hundred sixty-six billion, eight hundred sixty-seven million, nine hundred twenty-three thousand, nine hundred sixty-eight".