2015531430011 has 32 divisors (see below), whose sum is σ = 2269631266560. Its totient is φ = 1773960652800.

The previous prime is 2015531429981. The next prime is 2015531430053. The reversal of 2015531430011 is 1100341355102.

It is a cyclic number.

It is not a de Polignac number, because 2015531430011 - 2¹⁰ = 2015531428987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2015531430611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49453880 + ... + 49494618.

It is an arithmetic number, because the mean of its divisors is an integer number (70925977080).

Almost surely, 2^{2015531430011} is an apocalyptic number.

2015531430011 is a deficient number, since it is larger than the sum of its proper divisors (254099836549).

2015531430011 is a wasteful number, since it uses less digits than its factorization.

2015531430011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41627.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 2015531430011 its reverse (1100341355102), we get a palindrome (3115872785113).

The spelling of 2015531430011 in words is "two trillion, fifteen billion, five hundred thirty-one million, four hundred thirty thousand, eleven".