13534643643 has 16 divisors (see below), whose sum is σ = 18185986560. Its totient is φ = 8953269984.

The previous prime is 13534643611. The next prime is 13534643657. The reversal of 13534643643 is 34634643531.

It is not a de Polignac number, because 13534643643 - 2⁵ = 13534643611 is a prime.

It is a super-2 number, since 2×13534643643² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13534643595 and 13534643604.

It is not an unprimeable number, because it can be changed into a prime (13534643663) 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 15 ways as a sum of consecutive naturals, for example, 852405 + ... + 868137.

It is an arithmetic number, because the mean of its divisors is an integer number (1136624160).

Almost surely, 2^13534643643 is an apocalyptic number.

13534643643 is a deficient number, since it is larger than the sum of its proper divisors (4651342917).

13534643643 is a wasteful number, since it uses less digits than its factorization.

13534643643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17938.

The product of its digits is 933120, while the sum is 42.

The spelling of 13534643643 in words is "thirteen billion, five hundred thirty-four million, six hundred forty-three thousand, six hundred forty-three".