266303023680 has 56 divisors (see below), whose sum is σ = 845512103232. Its totient is φ = 71014139392.

The previous prime is 266303023663. The next prime is 266303023681. The reversal of 266303023680 is 86320303662.

It is a super-2 number, since 2×266303023680² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266303023681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138698532 + ... + 138700451.

Almost surely, 2^266303023680 is an apocalyptic number.

266303023680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266303023680 is an abundant number, since it is smaller than the sum of its proper divisors (579209079552).

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

266303023680 is a wasteful number, since it uses less digits than its factorization.

266303023680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277399003 (or 277398993 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 39.

The spelling of 266303023680 in words is "two hundred sixty-six billion, three hundred three million, twenty-three thousand, six hundred eighty".