1366440712650 has 288 divisors, whose sum is σ = 4225286939328. Its totient is φ = 313608038400.

The previous prime is 1366440712591. The next prime is 1366440712669. The reversal of 1366440712650 is 562170446631.

1366440712650 is a `hidden beast` number, since 1 + 36 + 6 + 440 + 7 + 126 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1366440712596 and 1366440712605.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 10576945 + ... + 10705355.

It is an arithmetic number, because the mean of its divisors is an integer number (14671135206).

Almost surely, 2^{1366440712650} is an apocalyptic number.

1366440712650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1366440712650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2112643469664).

1366440712650 is an abundant number, since it is smaller than the sum of its proper divisors (2858846226678).

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

1366440712650 is a wasteful number, since it uses less digits than its factorization.

1366440712650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128566 (or 128558 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 1366440712650 in words is "one trillion, three hundred sixty-six billion, four hundred forty million, seven hundred twelve thousand, six hundred fifty".