15348565523 has 4 divisors (see below), whose sum is σ = 15348814680. Its totient is φ = 15348316368.

The previous prime is 15348565517. The next prime is 15348565571. The reversal of 15348565523 is 32556584351.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32556584351 = 27103 ⋅1201217.

It is a cyclic number.

It is not a de Polignac number, because 15348565523 - 2³⁰ = 14274823699 is a prime.

It is a super-2 number, since 2×15348565523² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15348567523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42668 + ... + 180326.

It is an arithmetic number, because the mean of its divisors is an integer number (3837203670).

Almost surely, 2^15348565523 is an apocalyptic number.

15348565523 is a deficient number, since it is larger than the sum of its proper divisors (249157).

15348565523 is a wasteful number, since it uses less digits than its factorization.

15348565523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249156.

The product of its digits is 2160000, while the sum is 47.

The spelling of 15348565523 in words is "fifteen billion, three hundred forty-eight million, five hundred sixty-five thousand, five hundred twenty-three".