1266371156160 has 336 divisors, whose sum is σ = 4753350830592. Its totient is φ = 306896947200.

The previous prime is 1266371156153. The next prime is 1266371156207. The reversal of 1266371156160 is 616511736621.

1266371156160 is a `hidden beast` number, since 1 + 2 + 6 + 637 + 1 + 1 + 5 + 6 + 1 + 6 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 145438527 + ... + 145447233.

It is an arithmetic number, because the mean of its divisors is an integer number (14146877472).

Almost surely, 2^{1266371156160} is an apocalyptic number.

1266371156160 is a gapful number since it is divisible by the number (10) 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 1266371156160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2376675415296).

1266371156160 is an abundant number, since it is smaller than the sum of its proper divisors (3486979674432).

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

1266371156160 is a wasteful number, since it uses less digits than its factorization.

1266371156160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13332 (or 13319 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 1266371156160 in words is "one trillion, two hundred sixty-six billion, three hundred seventy-one million, one hundred fifty-six thousand, one hundred sixty".