2015543440545 has 8 divisors (see below), whose sum is σ = 3224869504896. Its totient is φ = 1074956501616.

The previous prime is 2015543440459. The next prime is 2015543440553. The reversal of 2015543440545 is 5450443455102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2015543440545 - 2⁹ = 2015543440033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2015543440497 and 2015543440506.

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, 67184781337 + ... + 67184781366.

It is an arithmetic number, because the mean of its divisors is an integer number (403108688112).

Almost surely, 2^{2015543440545} is an apocalyptic number.

It is an amenable number.

2015543440545 is a deficient number, since it is larger than the sum of its proper divisors (1209326064351).

2015543440545 is a wasteful number, since it uses less digits than its factorization.

2015543440545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134369562711.

The product of its (nonzero) digits is 960000, while the sum is 42.

Adding to 2015543440545 its reverse (5450443455102), we get a palindrome (7465986895647).

The spelling of 2015543440545 in words is "two trillion, fifteen billion, five hundred forty-three million, four hundred forty thousand, five hundred forty-five".