1366691931136 has 297 divisors, whose sum is σ = 3387074574321. Its totient is φ = 549475024896.

The previous prime is 1366691931131. The next prime is 1366691931161. The reversal of 1366691931136 is 6311391966631.

The square root of 1366691931136 is 1169056.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1064033510400 + 302658420736 = 1031520^2 + 550144^2 .

It is not an unprimeable number, because it can be changed into a prime (1366691931131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4451765095 + ... + 4451765401.

Almost surely, 2^{1366691931136} is an apocalyptic number.

1366691931136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1366691931136 is the 1169056-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366691931136

1366691931136 is an abundant number, since it is smaller than the sum of its proper divisors (2020382643185).

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

1366691931136 is an frugal number, since it uses more digits than its factorization.

1366691931136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 333 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 55.

The spelling of 1366691931136 in words is "one trillion, three hundred sixty-six billion, six hundred ninety-one million, nine hundred thirty-one thousand, one hundred thirty-six".