266669328000 has 128 divisors (see below), whose sum is σ = 884008981440. Its totient is φ = 71111808000.

The previous prime is 266669327987. The next prime is 266669328041. The reversal of 266669328000 is 823966662.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×266669328000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2729806 + ... + 2825805.

Almost surely, 2^266669328000 is an apocalyptic number.

266669328000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266669328000 is an abundant number, since it is smaller than the sum of its proper divisors (617339653440).

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

266669328000 is an equidigital number, since it uses as much as digits as its factorization.

266669328000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555643 (or 5555621 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 48.

The spelling of 266669328000 in words is "two hundred sixty-six billion, six hundred sixty-nine million, three hundred twenty-eight thousand".