11689439992720 has 160 divisors (see below), whose sum is σ = 32134047217920. Its totient is φ = 3869308692480.

The previous prime is 11689439992717. The next prime is 11689439992739. The reversal of 11689439992720 is 2729993498611.

It is a Harshad number since it is a multiple of its sum of digits (70).

It is a self number, because there is not a number n which added to its sum of digits gives 11689439992720.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 332626350 + ... + 332661490.

It is an arithmetic number, because the mean of its divisors is an integer number (200837795112).

Almost surely, 2^{11689439992720} is an apocalyptic number.

11689439992720 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 11689439992720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16067023608960).

11689439992720 is an abundant number, since it is smaller than the sum of its proper divisors (20444607225200).

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

11689439992720 is a wasteful number, since it uses less digits than its factorization.

11689439992720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55673 (or 55667 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 70.

The spelling of 11689439992720 in words is "eleven trillion, six hundred eighty-nine billion, four hundred thirty-nine million, nine hundred ninety-two thousand, seven hundred twenty".