1081686605736 has 256 divisors, whose sum is σ = 3096903352320. Its totient is φ = 311931648000.

The previous prime is 1081686605723. The next prime is 1081686605771. The reversal of 1081686605736 is 6375066861801.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 88071916 + ... + 88084196.

It is an arithmetic number, because the mean of its divisors is an integer number (12097278720).

Almost surely, 2^{1081686605736} 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 1081686605736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1548451676160).

1081686605736 is an abundant number, since it is smaller than the sum of its proper divisors (2015216746584).

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

1081686605736 is a wasteful number, since it uses less digits than its factorization.

1081686605736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12536 (or 12532 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 1081686605736 in words is "one trillion, eighty-one billion, six hundred eighty-six million, six hundred five thousand, seven hundred thirty-six".