266220715100 has 72 divisors (see below), whose sum is σ = 603047839968. Its totient is φ = 101819238400.

The previous prime is 266220715099. The next prime is 266220715121. The reversal of 266220715100 is 1517022662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6366260 + ... + 6407940.

It is an arithmetic number, because the mean of its divisors is an integer number (8375664444).

Almost surely, 2^266220715100 is an apocalyptic number.

266220715100 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 266220715100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301523919984).

266220715100 is an abundant number, since it is smaller than the sum of its proper divisors (336827124868).

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

266220715100 is a wasteful number, since it uses less digits than its factorization.

266220715100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44495 (or 44488 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 266220715100 its reverse (1517022662), we get a palindrome (267737737762).

The spelling of 266220715100 in words is "two hundred sixty-six billion, two hundred twenty million, seven hundred fifteen thousand, one hundred".