13729512537 has 24 divisors (see below), whose sum is σ = 22481076800. Its totient is φ = 8004248928.

The previous prime is 13729512481. The next prime is 13729512539. The reversal of 13729512537 is 73521592731.

13729512537 is a `hidden beast` number, since 13 + 7 + 2 + 95 + 12 + 537 = 666.

It is not a de Polignac number, because 13729512537 - 2¹⁰ = 13729511513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13729512492 and 13729512501.

It is not an unprimeable number, because it can be changed into a prime (13729512539) 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 23 ways as a sum of consecutive naturals, for example, 3085837 + ... + 3090282.

Almost surely, 2^13729512537 is an apocalyptic number.

It is an amenable number.

13729512537 is a deficient number, since it is larger than the sum of its proper divisors (8751564263).

13729512537 is a wasteful number, since it uses less digits than its factorization.

13729512537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6176157 (or 6176154 counting only the distinct ones).

The product of its digits is 396900, while the sum is 45.

The spelling of 13729512537 in words is "thirteen billion, seven hundred twenty-nine million, five hundred twelve thousand, five hundred thirty-seven".