15541120000 has 220 divisors, whose sum is σ = 44380106320. Its totient is φ = 5326848000.

The previous prime is 15541119991. The next prime is 15541120019. The reversal of 15541120000 is 2114551.

It is a self number, because there is not a number n which added to its sum of digits gives 15541120000.

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, 4478266 + ... + 4481734.

It is an arithmetic number, because the mean of its divisors is an integer number (201727756).

Almost surely, 2^15541120000 is an apocalyptic number.

15541120000 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 15541120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22190053160).

15541120000 is an abundant number, since it is smaller than the sum of its proper divisors (28838986320).

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

15541120000 is an frugal number, since it uses more digits than its factorization.

15541120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516 (or 3483 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 15541120000 its reverse (2114551), we get a palindrome (15543234551).

The spelling of 15541120000 in words is "fifteen billion, five hundred forty-one million, one hundred twenty thousand".