1365816985960 has 256 divisors, whose sum is σ = 3729369600000. Its totient is φ = 449626044672.

The previous prime is 1365816985943. The next prime is 1365816985969. The reversal of 1365816985960 is 695896185631.

It is not an unprimeable number, because it can be changed into a prime (1365816985969) 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, 34788021 + ... + 34827259.

It is an arithmetic number, because the mean of its divisors is an integer number (14567850000).

Almost surely, 2^{1365816985960} is an apocalyptic number.

1365816985960 is a gapful number since it is divisible by the number (10) 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 1365816985960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1864684800000).

1365816985960 is an abundant number, since it is smaller than the sum of its proper divisors (2363552614040).

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

1365816985960 is a wasteful number, since it uses less digits than its factorization.

1365816985960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39373 (or 39355 counting only the distinct ones).

The product of its (nonzero) digits is 83980800, while the sum is 67.

The spelling of 1365816985960 in words is "one trillion, three hundred sixty-five billion, eight hundred sixteen million, nine hundred eighty-five thousand, nine hundred sixty".