13578487532 has 24 divisors (see below), whose sum is σ = 24587584560. Its totient is φ = 6553574720.

The previous prime is 13578487523. The next prime is 13578487547. The reversal of 13578487532 is 23578487531.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588518 + ... + 611154.

It is an arithmetic number, because the mean of its divisors is an integer number (1024482690).

Almost surely, 2^13578487532 is an apocalyptic number.

It is an amenable number.

13578487532 is a deficient number, since it is larger than the sum of its proper divisors (11009097028).

13578487532 is a wasteful number, since it uses less digits than its factorization.

13578487532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27841 (or 27839 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 53.

Subtracting 13578487532 from its reverse (23578487531), we obtain a palindrome (9999999999).

The spelling of 13578487532 in words is "thirteen billion, five hundred seventy-eight million, four hundred eighty-seven thousand, five hundred thirty-two".