13494517988 has 72 divisors (see below), whose sum is σ = 27804946176. Its totient is φ = 5611057920.

The previous prime is 13494517919. The next prime is 13494518069. The reversal of 13494517988 is 88971549431.

It is a super-3 number, since 3×13494517988³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43113320 + ... + 43113632.

It is an arithmetic number, because the mean of its divisors is an integer number (386179808).

Almost surely, 2^13494517988 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 13494517988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13902473088).

13494517988 is an abundant number, since it is smaller than the sum of its proper divisors (14310428188).

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

13494517988 is a wasteful number, since it uses less digits than its factorization.

13494517988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 550 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 59.

The spelling of 13494517988 in words is "thirteen billion, four hundred ninety-four million, five hundred seventeen thousand, nine hundred eighty-eight".