15543414042 has 16 divisors (see below), whose sum is σ = 33478122720. Its totient is φ = 4782588912.

The previous prime is 15543414011. The next prime is 15543414059. The reversal of 15543414042 is 24041434551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 15543413994 and 15543414012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99637192 + ... + 99637347.

It is an arithmetic number, because the mean of its divisors is an integer number (2092382670).

Almost surely, 2^15543414042 is an apocalyptic number.

15543414042 is an abundant number, since it is smaller than the sum of its proper divisors (17934708678).

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

15543414042 is a wasteful number, since it uses less digits than its factorization.

15543414042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199274557.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 15543414042 its reverse (24041434551), we get a palindrome (39584848593).

The spelling of 15543414042 in words is "fifteen billion, five hundred forty-three million, four hundred fourteen thousand, forty-two".