13116537647544 has 128 divisors (see below), whose sum is σ = 33605884972800. Its totient is φ = 4264752583680.

The previous prime is 13116537647519. The next prime is 13116537647569. The reversal of 13116537647544 is 44574673561131.

It is an interprime number because it is at equal distance from previous prime (13116537647519) and next prime (13116537647569).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459940774 + ... + 459969290.

It is an arithmetic number, because the mean of its divisors is an integer number (262545976350).

Almost surely, 2^{13116537647544} 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 13116537647544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16802942486400).

13116537647544 is an abundant number, since it is smaller than the sum of its proper divisors (20489347325256).

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

13116537647544 is a wasteful number, since it uses less digits than its factorization.

13116537647544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31093 (or 31089 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 57.

The spelling of 13116537647544 in words is "thirteen trillion, one hundred sixteen billion, five hundred thirty-seven million, six hundred forty-seven thousand, five hundred forty-four".