1266116304240 has 120 divisors (see below), whose sum is σ = 4252414926240. Its totient is φ = 337601290752.

The previous prime is 1266116304239. The next prime is 1266116304251. The reversal of 1266116304240 is 424036116621.

1266116304240 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 11 + 630 + 4 + 2 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a junction number, because it is equal to n+sod(n) for n = 1266116304195 and 1266116304204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8815726 + ... + 8958194.

It is an arithmetic number, because the mean of its divisors is an integer number (35436791052).

Almost surely, 2^{1266116304240} is an apocalyptic number.

1266116304240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266116304240 is an abundant number, since it is smaller than the sum of its proper divisors (2986298622000).

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

1266116304240 is a wasteful number, since it uses less digits than its factorization.

1266116304240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154831 (or 154822 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 1266116304240 in words is "one trillion, two hundred sixty-six billion, one hundred sixteen million, three hundred four thousand, two hundred forty".