11512331620000 has 60 divisors (see below), whose sum is σ = 28322062684146. Its totient is φ = 4604932640000.

The previous prime is 11512331619989. The next prime is 11512331620007. The reversal of 11512331620000 is 2613321511.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 291198378384 + 11221133241616 = 539628^2 + 3349796^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (11512331620007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 287788291 + ... + 287828290.

Almost surely, 2^{11512331620000} is an apocalyptic number.

11512331620000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11512331620000 is an abundant number, since it is smaller than the sum of its proper divisors (16809731064146).

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

11512331620000 is an frugal number, since it uses more digits than its factorization.

11512331620000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575616611 (or 575616588 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 11512331620000 its reverse (2613321511), we get a palindrome (11514944941511).

The spelling of 11512331620000 in words is "eleven trillion, five hundred twelve billion, three hundred thirty-one million, six hundred twenty thousand".