266634456480 has 1152 divisors, whose sum is σ = 1117689269760. Its totient is φ = 59175567360.

The previous prime is 266634456461. The next prime is 266634456497. The reversal of 266634456480 is 84654436662.

266634456480 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1698308562 + ... + 1698308718.

It is an arithmetic number, because the mean of its divisors is an integer number (970216380).

Almost surely, 2^266634456480 is an apocalyptic number.

266634456480 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 266634456480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558844634880).

266634456480 is an abundant number, since it is smaller than the sum of its proper divisors (851054813280).

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

266634456480 is a wasteful number, since it uses less digits than its factorization.

266634456480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 358 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 54.

The spelling of 266634456480 in words is "two hundred sixty-six billion, six hundred thirty-four million, four hundred fifty-six thousand, four hundred eighty".