266116510000 has 150 divisors (see below), whose sum is σ = 708194895716. Its totient is φ = 96769200000.

The previous prime is 266116509979. The next prime is 266116510007. The reversal of 266116510000 is 15611662.

It is not an unprimeable number, because it can be changed into a prime (266116510007) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1100035 + ... + 1319965.

Almost surely, 2^266116510000 is an apocalyptic number.

266116510000 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 266116510000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354097447858).

266116510000 is an abundant number, since it is smaller than the sum of its proper divisors (442078385716).

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

266116510000 is a wasteful number, since it uses less digits than its factorization.

266116510000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219981 (or 219949 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 266116510000 in words is "two hundred sixty-six billion, one hundred sixteen million, five hundred ten thousand".