13186551648 has 48 divisors (see below), whose sum is σ = 34620805296. Its totient is φ = 4394741760.

The previous prime is 13186551641. The next prime is 13186551649. The reversal of 13186551648 is 84615568131.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 13186551597 and 13186551606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13186551641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 860340 + ... + 875532.

It is an arithmetic number, because the mean of its divisors is an integer number (721266777).

Almost surely, 2^13186551648 is an apocalyptic number.

It is an amenable number.

13186551648 is an abundant number, since it is smaller than the sum of its proper divisors (21434253648).

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

13186551648 is a wasteful number, since it uses less digits than its factorization.

13186551648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24247 (or 24239 counting only the distinct ones).

The product of its digits is 691200, while the sum is 48.

The spelling of 13186551648 in words is "thirteen billion, one hundred eighty-six million, five hundred fifty-one thousand, six hundred forty-eight".