2015544205145 has 12 divisors (see below), whose sum is σ = 2552650447140. Its totient is φ = 1527570343584.

The previous prime is 2015544205111. The next prime is 2015544205187. The reversal of 2015544205145 is 5415024455102.

It can be written as a sum of positive squares in 2 ways, for example, as 1317029369161 + 698514835984 = 1147619^2 + 835772^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2015544205145 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2015544205099 and 2015544205108.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558320690 + ... + 558324299.

It is an arithmetic number, because the mean of its divisors is an integer number (212720870595).

Almost surely, 2^{2015544205145} is an apocalyptic number.

It is an amenable number.

2015544205145 is a deficient number, since it is larger than the sum of its proper divisors (537106241995).

2015544205145 is a wasteful number, since it uses less digits than its factorization.

2015544205145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116645032 (or 1116645013 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 38.

The spelling of 2015544205145 in words is "two trillion, fifteen billion, five hundred forty-four million, two hundred five thousand, one hundred forty-five".