266613742080 has 800 divisors, whose sum is σ = 1104992025984. Its totient is φ = 60178857984.

The previous prime is 266613742037. The next prime is 266613742177. The reversal of 266613742080 is 80247316662.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 120475054 + ... + 120477266.

Almost surely, 2^266613742080 is an apocalyptic number.

266613742080 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 266613742080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (552496012992).

266613742080 is an abundant number, since it is smaller than the sum of its proper divisors (838378283904).

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

266613742080 is an equidigital number, since it uses as much as digits as its factorization.

266613742080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338 (or 2313 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 266613742080 in words is "two hundred sixty-six billion, six hundred thirteen million, seven hundred forty-two thousand, eighty".