11659089780 has 240 divisors, whose sum is σ = 40229925120. Its totient is φ = 2808628992.

The previous prime is 11659089731. The next prime is 11659089797. The reversal of 11659089780 is 8798095611.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 983931 + ... + 995709.

It is an arithmetic number, because the mean of its divisors is an integer number (167624688).

Almost surely, 2^11659089780 is an apocalyptic number.

11659089780 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 11659089780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20114962560).

11659089780 is an abundant number, since it is smaller than the sum of its proper divisors (28570835340).

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

11659089780 is a wasteful number, since it uses less digits than its factorization.

11659089780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11860 (or 11849 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 54.

The spelling of 11659089780 in words is "eleven billion, six hundred fifty-nine million, eighty-nine thousand, seven hundred eighty".