11720402036240 has 160 divisors (see below), whose sum is σ = 28186915921920. Its totient is φ = 4527594086400.

The previous prime is 11720402036173. The next prime is 11720402036443. The reversal of 11720402036240 is 4263020402711.

It is a junction number, because it is equal to n+sod(n) for n = 11720402036197 and 11720402036206.

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, 3489251681 + ... + 3489255039.

It is an arithmetic number, because the mean of its divisors is an integer number (176168224512).

Almost surely, 2^{11720402036240} is an apocalyptic number.

11720402036240 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 11720402036240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14093457960960).

11720402036240 is an abundant number, since it is smaller than the sum of its proper divisors (16466513885680).

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

11720402036240 is a wasteful number, since it uses less digits than its factorization.

11720402036240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881 (or 5875 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

Adding to 11720402036240 its reverse (4263020402711), we get a palindrome (15983422438951).

The spelling of 11720402036240 in words is "eleven trillion, seven hundred twenty billion, four hundred two million, thirty-six thousand, two hundred forty".