13135737537 has 24 divisors (see below), whose sum is σ = 20555755584. Its totient is φ = 8035114464.

The previous prime is 13135737523. The next prime is 13135737541. The reversal of 13135737537 is 73573753131.

13135737537 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 573 + 75 + 3 + 7 = 666.

It is not a de Polignac number, because 13135737537 - 2⁷ = 13135737409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13135737492 and 13135737501.

It is not an unprimeable number, because it can be changed into a prime (13135737547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316603 + ... + 355680.

It is an arithmetic number, because the mean of its divisors is an integer number (856489816).

Almost surely, 2^13135737537 is an apocalyptic number.

It is an amenable number.

13135737537 is a deficient number, since it is larger than the sum of its proper divisors (7420018047).

13135737537 is a wasteful number, since it uses less digits than its factorization.

13135737537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672469 (or 672466 counting only the distinct ones).

The product of its digits is 694575, while the sum is 45.

The spelling of 13135737537 in words is "thirteen billion, one hundred thirty-five million, seven hundred thirty-seven thousand, five hundred thirty-seven".