266800988160 has 760 divisors, whose sum is σ = 1096221202560. Its totient is φ = 60813213696.

The previous prime is 266800988131. The next prime is 266800988197. The reversal of 266800988160 is 61889008662.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 266800988097 and 266800988106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 743178061 + ... + 743178419.

Almost surely, 2^266800988160 is an apocalyptic number.

266800988160 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 266800988160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548110601280).

266800988160 is an abundant number, since it is smaller than the sum of its proper divisors (829420214400).

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

266800988160 is an frugal number, since it uses more digits than its factorization.

266800988160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 266800988160 in words is "two hundred sixty-six billion, eight hundred million, nine hundred eighty-eight thousand, one hundred sixty".