2015543440452 has 48 divisors (see below), whose sum is σ = 5034363667200. Its totient is φ = 625699476000.

The previous prime is 2015543440423. The next prime is 2015543440459. The reversal of 2015543440452 is 2540443455102.

It is a self number, because there is not a number n which added to its sum of digits gives 2015543440452.

It is not an unprimeable number, because it can be changed into a prime (2015543440459) 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 15 ways as a sum of consecutive naturals, for example, 74902674 + ... + 74929577.

It is an arithmetic number, because the mean of its divisors is an integer number (104882576400).

Almost surely, 2^{2015543440452} is an apocalyptic number.

It is an amenable number.

2015543440452 is an abundant number, since it is smaller than the sum of its proper divisors (3018820226748).

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

2015543440452 is a wasteful number, since it uses less digits than its factorization.

2015543440452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149832336 (or 149832334 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 39.

Adding to 2015543440452 its reverse (2540443455102), we get a palindrome (4555986895554).

The spelling of 2015543440452 in words is "two trillion, fifteen billion, five hundred forty-three million, four hundred forty thousand, four hundred fifty-two".