13671708523 has 16 divisors (see below), whose sum is σ = 15071288832. Its totient is φ = 12298608000.

The previous prime is 13671708493. The next prime is 13671708529. The reversal of 13671708523 is 32580717631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13671708523 is a prime.

It is a super-2 number, since 2×13671708523² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13671708523.

It is not an unprimeable number, because it can be changed into a prime (13671708529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 775618 + ... + 793048.

It is an arithmetic number, because the mean of its divisors is an integer number (941955552).

Almost surely, 2^13671708523 is an apocalyptic number.

13671708523 is a deficient number, since it is larger than the sum of its proper divisors (1399580309).

13671708523 is a wasteful number, since it uses less digits than its factorization.

13671708523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18186.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 13671708523 in words is "thirteen billion, six hundred seventy-one million, seven hundred eight thousand, five hundred twenty-three".