11641320000 has 350 divisors, whose sum is σ = 43133847438. Its totient is φ = 3103488000.

The previous prime is 11641319951. The next prime is 11641320037. The reversal of 11641320000 is 2314611.

It is a happy number.

11641320000 is a `hidden beast` number, since 1 + 1 + 641 + 3 + 20 + 0 + 0 + 0 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 5639409216 + 6001910784 = 75096^2 + 77472^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 3238204 + ... + 3241796.

Almost surely, 2^11641320000 is an apocalyptic number.

11641320000 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 11641320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21566923719).

11641320000 is an abundant number, since it is smaller than the sum of its proper divisors (31492527438).

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

11641320000 is an frugal number, since it uses more digits than its factorization.

11641320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3637 (or 3603 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11641320000 its reverse (2314611), we get a palindrome (11643634611).

The spelling of 11641320000 in words is "eleven billion, six hundred forty-one million, three hundred twenty thousand".