15423656215 has 16 divisors (see below), whose sum is σ = 21378673440. Its totient is φ = 10557368320.

The previous prime is 15423656161. The next prime is 15423656243. The reversal of 15423656215 is 51265632451.

15423656215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-15423656215 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 8247010 + ... + 8248879.

It is an arithmetic number, because the mean of its divisors is an integer number (1336167090).

Almost surely, 2^15423656215 is an apocalyptic number.

15423656215 is a deficient number, since it is larger than the sum of its proper divisors (5955017225).

15423656215 is a wasteful number, since it uses less digits than its factorization.

15423656215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16495922.

The product of its digits is 216000, while the sum is 40.

The spelling of 15423656215 in words is "fifteen billion, four hundred twenty-three million, six hundred fifty-six thousand, two hundred fifteen".