15541814552 has 64 divisors (see below), whose sum is σ = 32711571360. Its totient is φ = 6862336000.

The previous prime is 15541814551. The next prime is 15541814569. The reversal of 15541814552 is 25541814551.

It is a happy number.

15541814552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15541814551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454568 + ... + 487560.

Almost surely, 2^15541814552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15541814552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16355785680).

15541814552 is an abundant number, since it is smaller than the sum of its proper divisors (17169756808).

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

15541814552 is a wasteful number, since it uses less digits than its factorization.

15541814552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33164 (or 33160 counting only the distinct ones).

The product of its digits is 160000, while the sum is 41.

Subtracting 15541814552 from its reverse (25541814551), we obtain a palindrome (9999999999).

The spelling of 15541814552 in words is "fifteen billion, five hundred forty-one million, eight hundred fourteen thousand, five hundred fifty-two".