1366450780896 has 36 divisors (see below), whose sum is σ = 3885844408992. Its totient is φ = 455483593536.

The previous prime is 1366450780889. The next prime is 1366450780921. The reversal of 1366450780896 is 6980870546631.

1366450780896 is a `hidden beast` number, since 1 + 36 + 6 + 4 + 507 + 8 + 0 + 8 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1366450780896² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2372310096 + ... + 2372310671.

It is an arithmetic number, because the mean of its divisors is an integer number (107940122472).

Almost surely, 2^{1366450780896} is an apocalyptic number.

1366450780896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1366450780896 is an abundant number, since it is smaller than the sum of its proper divisors (2519393628096).

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

1366450780896 is a wasteful number, since it uses less digits than its factorization.

1366450780896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744620783 (or 4744620772 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 1366450780896 in words is "one trillion, three hundred sixty-six billion, four hundred fifty million, seven hundred eighty thousand, eight hundred ninety-six".