1266936546834 has 96 divisors (see below), whose sum is σ = 3303955200000. Its totient is φ = 342757347552.

The previous prime is 1266936546829. The next prime is 1266936546839. The reversal of 1266936546834 is 4386456396621.

1266936546834 is a `hidden beast` number, since 1 + 2 + 6 + 6 + 9 + 3 + 6 + 546 + 83 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1266936546829) and next prime (1266936546839).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (1266936546839) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4653237 + ... + 4917975.

It is an arithmetic number, because the mean of its divisors is an integer number (34416200000).

Almost surely, 2^{1266936546834} is an apocalyptic number.

1266936546834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266936546834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1651977600000).

1266936546834 is an abundant number, since it is smaller than the sum of its proper divisors (2037018653166).

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

1266936546834 is a wasteful number, since it uses less digits than its factorization.

1266936546834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266772 (or 266769 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 63.

The spelling of 1266936546834 in words is "one trillion, two hundred sixty-six billion, nine hundred thirty-six million, five hundred forty-six thousand, eight hundred thirty-four".