15642303215 has 16 divisors (see below), whose sum is σ = 23402511360. Its totient is φ = 9751045920.

The previous prime is 15642303181. The next prime is 15642303227. The reversal of 15642303215 is 51230324651.

It is a happy number.

It is not a de Polignac number, because 15642303215 - 2⁸ = 15642302959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20314295 + ... + 20315064.

It is an arithmetic number, because the mean of its divisors is an integer number (1462656960).

Almost surely, 2^15642303215 is an apocalyptic number.

15642303215 is a deficient number, since it is larger than the sum of its proper divisors (7760208145).

15642303215 is a wasteful number, since it uses less digits than its factorization.

15642303215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40629382.

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 15642303215 its reverse (51230324651), we get a palindrome (66872627866).

The spelling of 15642303215 in words is "fifteen billion, six hundred forty-two million, three hundred three thousand, two hundred fifteen".