15031530155012 has 24 divisors (see below), whose sum is σ = 30063176075520. Its totient is φ = 6442059545280.

The previous prime is 15031530154999. The next prime is 15031530155023. The reversal of 15031530155012 is 21055103513051.

It is a self number, because there is not a number n which added to its sum of digits gives 15031530155012.

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, 7646312 + ... + 9408992.

It is an arithmetic number, because the mean of its divisors is an integer number (1252632336480).

Almost surely, 2^{15031530155012} is an apocalyptic number.

It is an amenable number.

15031530155012 is an abundant number, since it is smaller than the sum of its proper divisors (15031645920508).

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

15031530155012 is a wasteful number, since it uses less digits than its factorization.

15031530155012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067251 (or 2067249 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 32.

Adding to 15031530155012 its reverse (21055103513051), we get a palindrome (36086633668063).

The spelling of 15031530155012 in words is "fifteen trillion, thirty-one billion, five hundred thirty million, one hundred fifty-five thousand, twelve".