1366556765796 has 192 divisors, whose sum is σ = 3743292456960. Its totient is φ = 430490712960.

The previous prime is 1366556765789. The next prime is 1366556765797. The reversal of 1366556765796 is 6975676556631.

1366556765796 is a `hidden beast` number, since 1 + 3 + 6 + 6 + 5 + 567 + 6 + 57 + 9 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (1366556765797) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 72846450 + ... + 72865206.

It is an arithmetic number, because the mean of its divisors is an integer number (19496314880).

Almost surely, 2^{1366556765796} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366556765796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1871646228480).

1366556765796 is an abundant number, since it is smaller than the sum of its proper divisors (2376735691164).

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

1366556765796 is a wasteful number, since it uses less digits than its factorization.

1366556765796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19311 (or 19303 counting only the distinct ones).

The product of its digits is 1285956000, while the sum is 72.

The spelling of 1366556765796 in words is "one trillion, three hundred sixty-six billion, five hundred fifty-six million, seven hundred sixty-five thousand, seven hundred ninety-six".