1366781233812 has 24 divisors (see below), whose sum is σ = 3189471225696. Its totient is φ = 455548742688.

The previous prime is 1366781233799. The next prime is 1366781233859. The reversal of 1366781233812 is 2183321876631.

It is a super-2 number, since 2×1366781233812² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5498578 + ... + 5741769.

It is an arithmetic number, because the mean of its divisors is an integer number (132894634404).

Almost surely, 2^{1366781233812} is an apocalyptic number.

1366781233812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1366781233812 is an abundant number, since it is smaller than the sum of its proper divisors (1822689991884).

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

1366781233812 is a wasteful number, since it uses less digits than its factorization.

1366781233812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11250487 (or 11250485 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The spelling of 1366781233812 in words is "one trillion, three hundred sixty-six billion, seven hundred eighty-one million, two hundred thirty-three thousand, eight hundred twelve".