13656409528 has 32 divisors (see below), whose sum is σ = 26777187360. Its totient is φ = 6517118080.

The previous prime is 13656409523. The next prime is 13656409537. The reversal of 13656409528 is 82590465631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13656409523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4326 + ... + 165322.

It is an arithmetic number, because the mean of its divisors is an integer number (836787105).

Almost surely, 2^13656409528 is an apocalyptic number.

It is an amenable number.

13656409528 is a deficient number, since it is larger than the sum of its proper divisors (13120777832).

13656409528 is a wasteful number, since it uses less digits than its factorization.

13656409528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161487 (or 161483 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 13656409528 in words is "thirteen billion, six hundred fifty-six million, four hundred nine thousand, five hundred twenty-eight".