15543254132 has 18 divisors (see below), whose sum is σ = 31641624882. Its totient is φ = 6661394544.

The previous prime is 15543254063. The next prime is 15543254137. The reversal of 15543254132 is 23145234551.

It can be written as a sum of positive squares in only one way, i.e., 15389394916 + 153859216 = 124054^2 + 12404^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15543254092 and 15543254101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15543254137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39650963 + ... + 39651354.

It is an arithmetic number, because the mean of its divisors is an integer number (1757868049).

Almost surely, 2^15543254132 is an apocalyptic number.

It is an amenable number.

15543254132 is an abundant number, since it is smaller than the sum of its proper divisors (16098370750).

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

15543254132 is a wasteful number, since it uses less digits than its factorization.

15543254132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79302335 (or 79302326 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

Adding to 15543254132 its reverse (23145234551), we get a palindrome (38688488683).

The spelling of 15543254132 in words is "fifteen billion, five hundred forty-three million, two hundred fifty-four thousand, one hundred thirty-two".