266931098760 has 128 divisors (see below), whose sum is σ = 818235717120. Its totient is φ = 69632689152.

The previous prime is 266931098747. The next prime is 266931098761. The reversal of 266931098760 is 67890139662.

It is a happy number.

It is a super-2 number, since 2×266931098760² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266931098760.

It is not an unprimeable number, because it can be changed into a prime (266931098761) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 12606102 + ... + 12627258.

It is an arithmetic number, because the mean of its divisors is an integer number (6392466540).

Almost surely, 2^266931098760 is an apocalyptic number.

266931098760 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 266931098760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409117858560).

266931098760 is an abundant number, since it is smaller than the sum of its proper divisors (551304618360).

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

266931098760 is a wasteful number, since it uses less digits than its factorization.

266931098760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23455 (or 23451 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 266931098760 in words is "two hundred sixty-six billion, nine hundred thirty-one million, ninety-eight thousand, seven hundred sixty".