1366563373056 has 720 divisors, whose sum is σ = 4881668553216. Its totient is φ = 359443464192.

The previous prime is 1366563373031. The next prime is 1366563373157. The reversal of 1366563373056 is 6503733656631.

It is a happy number.

1366563373056 is a `hidden beast` number, since 1 + 3 + 6 + 6 + 563 + 3 + 73 + 0 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1366563372993 and 1366563373011.

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, 824720580 + ... + 824722236.

Almost surely, 2^{1366563373056} is an apocalyptic number.

1366563373056 is a gapful number since it is divisible by the number (16) 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 1366563373056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2440834276608).

1366563373056 is an abundant number, since it is smaller than the sum of its proper divisors (3515105180160).

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

1366563373056 is a wasteful number, since it uses less digits than its factorization.

1366563373056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762 (or 1733 counting only the distinct ones).

The product of its (nonzero) digits is 18370800, while the sum is 54.

The spelling of 1366563373056 in words is "one trillion, three hundred sixty-six billion, five hundred sixty-three million, three hundred seventy-three thousand, fifty-six".