266972649600 has 192 divisors, whose sum is σ = 879826500000. Its totient is φ = 71153418240.

The previous prime is 266972649589. The next prime is 266972649611. The reversal of 266972649600 is 6946279662.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (266972649589) and next prime (266972649611).

It is a tau number, because it is divible by the number of its divisors (192).

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 23 ways as a sum of consecutive naturals, for example, 20143776 + ... + 20157024.

Almost surely, 2^266972649600 is an apocalyptic number.

266972649600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266972649600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439913250000).

266972649600 is an abundant number, since it is smaller than the sum of its proper divisors (612853850400).

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

266972649600 is a wasteful number, since it uses less digits than its factorization.

266972649600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15375 (or 15358 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 57.

The spelling of 266972649600 in words is "two hundred sixty-six billion, nine hundred seventy-two million, six hundred forty-nine thousand, six hundred".