13534537344 has 64 divisors (see below), whose sum is σ = 35987436000. Its totient is φ = 4506954752.

The previous prime is 13534537339. The next prime is 13534537459. The reversal of 13534537344 is 44373543531.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×13534537344² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13534537296 and 13534537305.

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, 374002 + ... + 408590.

Almost surely, 2^13534537344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13534537344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17993718000).

13534537344 is an abundant number, since it is smaller than the sum of its proper divisors (22452898656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13534537344 is a wasteful number, since it uses less digits than its factorization.

13534537344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35625 (or 35613 counting only the distinct ones).

The product of its digits is 907200, while the sum is 42.

The spelling of 13534537344 in words is "thirteen billion, five hundred thirty-four million, five hundred thirty-seven thousand, three hundred forty-four".