11531040000 has 180 divisors, whose sum is σ = 38351048736. Its totient is φ = 3074816000.

The previous prime is 11531039981. The next prime is 11531040011. The reversal of 11531040000 is 4013511.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 467989 + ... + 492011.

Almost surely, 2^11531040000 is an apocalyptic number.

11531040000 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 11531040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19175524368).

11531040000 is an abundant number, since it is smaller than the sum of its proper divisors (26820008736).

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

11531040000 is an frugal number, since it uses more digits than its factorization.

11531040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24062 (or 24033 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 11531040000 its reverse (4013511), we get a palindrome (11535053511).

The spelling of 11531040000 in words is "eleven billion, five hundred thirty-one million, forty thousand".