11861738960 has 80 divisors (see below), whose sum is σ = 28268583552. Its totient is φ = 4627392000.

The previous prime is 11861738939. The next prime is 11861738989. The reversal of 11861738960 is 6983716811.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 11861738899 and 11861738908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530405 + ... + 552315.

Almost surely, 2^11861738960 is an apocalyptic number.

11861738960 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 11861738960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14134291776).

11861738960 is an abundant number, since it is smaller than the sum of its proper divisors (16406844592).

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

11861738960 is a wasteful number, since it uses less digits than its factorization.

11861738960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22092 (or 22086 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 11861738960 in words is "eleven billion, eight hundred sixty-one million, seven hundred thirty-eight thousand, nine hundred sixty".