266620118400 has 480 divisors, whose sum is σ = 986745862080. Its totient is φ = 70892236800.

The previous prime is 266620118377. The next prime is 266620118407. The reversal of 266620118400 is 4811026662.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266620118407) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 102901105 + ... + 102903695.

It is an arithmetic number, because the mean of its divisors is an integer number (2055720546).

Almost surely, 2^266620118400 is an apocalyptic number.

266620118400 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 266620118400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493372931040).

266620118400 is an abundant number, since it is smaller than the sum of its proper divisors (720125743680).

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

266620118400 is a wasteful number, since it uses less digits than its factorization.

266620118400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024 (or 2998 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 266620118400 in words is "two hundred sixty-six billion, six hundred twenty million, one hundred eighteen thousand, four hundred".