11701982520 has 160 divisors (see below), whose sum is σ = 39392701920. Its totient is φ = 3115687680.

The previous prime is 11701982483. The next prime is 11701982603. The reversal of 11701982520 is 2528910711.

It is a happy number.

11701982520 is a `hidden beast` number, since 117 + 0 + 19 + 8 + 2 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2404890 + ... + 2409750.

It is an arithmetic number, because the mean of its divisors is an integer number (246204387).

Almost surely, 2^11701982520 is an apocalyptic number.

11701982520 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 11701982520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19696350960).

11701982520 is an abundant number, since it is smaller than the sum of its proper divisors (27690719400).

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

11701982520 is a wasteful number, since it uses less digits than its factorization.

11701982520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627 (or 5614 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The spelling of 11701982520 in words is "eleven billion, seven hundred one million, nine hundred eighty-two thousand, five hundred twenty".