2015543440453 has 8 divisors (see below), whose sum is σ = 2041113110400. Its totient is φ = 1989975182208.

The previous prime is 2015543440423. The next prime is 2015543440459. The reversal of 2015543440453 is 3540443455102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2015543440453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015543440459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2685525 + ... + 3353077.

It is an arithmetic number, because the mean of its divisors is an integer number (255139138800).

Almost surely, 2^{2015543440453} is an apocalyptic number.

It is an amenable number.

2015543440453 is a deficient number, since it is larger than the sum of its proper divisors (25569669947).

2015543440453 is an equidigital number, since it uses as much as digits as its factorization.

2015543440453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705851.

The product of its (nonzero) digits is 576000, while the sum is 40.

Adding to 2015543440453 its reverse (3540443455102), we get a palindrome (5555986895555).

The spelling of 2015543440453 in words is "two trillion, fifteen billion, five hundred forty-three million, four hundred forty thousand, four hundred fifty-three".