266463944600 has 384 divisors, whose sum is σ = 742002508800. Its totient is φ = 87102259200.

The previous prime is 266463944587. The next prime is 266463944633. The reversal of 266463944600 is 6449364662.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 742239221 + ... + 742239579.

It is an arithmetic number, because the mean of its divisors is an integer number (1932298200).

Almost surely, 2^266463944600 is an apocalyptic number.

266463944600 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 266463944600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371001254400).

266463944600 is an abundant number, since it is smaller than the sum of its proper divisors (475538564200).

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

266463944600 is a wasteful number, since it uses less digits than its factorization.

266463944600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 50.

The spelling of 266463944600 in words is "two hundred sixty-six billion, four hundred sixty-three million, nine hundred forty-four thousand, six hundred".