266687228600 has 96 divisors (see below), whose sum is σ = 667917354720. Its totient is φ = 98443537920.

The previous prime is 266687228597. The next prime is 266687228603. The reversal of 266687228600 is 6822786662.

It is an interprime number because it is at equal distance from previous prime (266687228597) and next prime (266687228603).

It is a super-2 number, since 2×266687228600² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266687228603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12112802 + ... + 12134798.

It is an arithmetic number, because the mean of its divisors is an integer number (6957472445).

Almost surely, 2^266687228600 is an apocalyptic number.

266687228600 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 266687228600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333958677360).

266687228600 is an abundant number, since it is smaller than the sum of its proper divisors (401230126120).

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

266687228600 is a wasteful number, since it uses less digits than its factorization.

266687228600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26689 (or 26680 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 266687228600 in words is "two hundred sixty-six billion, six hundred eighty-seven million, two hundred twenty-eight thousand, six hundred".