11597596956 has 192 divisors, whose sum is σ = 33443020800. Its totient is φ = 3446251200.

The previous prime is 11597596949. The next prime is 11597597003. The reversal of 11597596956 is 65969579511.

It is a junction number, because it is equal to n+sod(n) for n = 11597596893 and 11597596902.

It is a congruent number.

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, 30280741 + ... + 30281123.

It is an arithmetic number, because the mean of its divisors is an integer number (174182400).

Almost surely, 2^11597596956 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 11597596956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16721510400).

11597596956 is an abundant number, since it is smaller than the sum of its proper divisors (21845423844).

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

11597596956 is a wasteful number, since it uses less digits than its factorization.

11597596956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 829 counting only the distinct ones).

The product of its digits is 22963500, while the sum is 63.

The spelling of 11597596956 in words is "eleven billion, five hundred ninety-seven million, five hundred ninety-six thousand, nine hundred fifty-six".