15545116143123 has 48 divisors (see below), whose sum is σ = 24127101250560. Its totient is φ = 8876917526400.

The previous prime is 15545116143083. The next prime is 15545116143131. The reversal of 15545116143123 is 32134161154551.

It is not a de Polignac number, because 15545116143123 - 2¹⁸ = 15545115880979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15545116148123) 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 47 ways as a sum of consecutive naturals, for example, 2077942543 + ... + 2077950023.

It is an arithmetic number, because the mean of its divisors is an integer number (502647942720).

Almost surely, 2^{15545116143123} is an apocalyptic number.

15545116143123 is a deficient number, since it is larger than the sum of its proper divisors (8581985107437).

15545116143123 is a wasteful number, since it uses less digits than its factorization.

15545116143123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15168 (or 15161 counting only the distinct ones).

The product of its digits is 216000, while the sum is 42.

Adding to 15545116143123 its reverse (32134161154551), we get a palindrome (47679277297674).

The spelling of 15545116143123 in words is "fifteen trillion, five hundred forty-five billion, one hundred sixteen million, one hundred forty-three thousand, one hundred twenty-three".