266969857968 has 480 divisors, whose sum is σ = 849365637120. Its totient is φ = 77586647040.

The previous prime is 266969857963. The next prime is 266969857997. The reversal of 266969857968 is 869758969662.

It is not an unprimeable number, because it can be changed into a prime (266969857963) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1355176846 + ... + 1355177042.

It is an arithmetic number, because the mean of its divisors is an integer number (1769511744).

Almost surely, 2^266969857968 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 266969857968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424682818560).

266969857968 is an abundant number, since it is smaller than the sum of its proper divisors (582395779152).

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

266969857968 is a wasteful number, since it uses less digits than its factorization.

266969857968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 536 counting only the distinct ones).

The product of its digits is 4232632320, while the sum is 81.

The spelling of 266969857968 in words is "two hundred sixty-six billion, nine hundred sixty-nine million, eight hundred fifty-seven thousand, nine hundred sixty-eight".