266088390120 has 512 divisors, whose sum is σ = 1072283443200. Its totient is φ = 57376180224.

The previous prime is 266088390091. The next prime is 266088390137. The reversal of 266088390120 is 21093880662.

266088390120 is a `hidden beast` number, since 2 + 6 + 60 + 88 + 390 + 120 = 666.

It is a super-2 number, since 2×266088390120² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12682759 + ... + 12703721.

It is an arithmetic number, because the mean of its divisors is an integer number (2094303600).

Almost surely, 2^266088390120 is an apocalyptic number.

266088390120 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 266088390120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536141721600).

266088390120 is an abundant number, since it is smaller than the sum of its proper divisors (806195053080).

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

266088390120 is a wasteful number, since it uses less digits than its factorization.

266088390120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21086 (or 21076 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 266088390120 in words is "two hundred sixty-six billion, eighty-eight million, three hundred ninety thousand, one hundred twenty".