266223480606720 has 6656 divisors, whose sum is σ = 1271020929024000. Its totient is φ = 53094139822080.

The previous prime is 266223480606691. The next prime is 266223480606827. The reversal of 266223480606720 is 27606084322662.

266223480606720 is a `hidden beast` number, since 2 + 6 + 6 + 2 + 2 + 3 + 4 + 8 + 0 + 606 + 7 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (6656).

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

It is an unprimeable number.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 6191243735019 + ... + 6191243735061.

Almost surely, 2^{266223480606720} is an apocalyptic number.

266223480606720 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 266223480606720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (635510464512000).

266223480606720 is an abundant number, since it is smaller than the sum of its proper divisors (1004797448417280).

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

266223480606720 is an frugal number, since it uses more digits than its factorization.

266223480606720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 54.

The spelling of 266223480606720 in words is "two hundred sixty-six trillion, two hundred twenty-three billion, four hundred eighty million, six hundred six thousand, seven hundred twenty".