13118156928 has 128 divisors (see below), whose sum is σ = 40754712000. Its totient is φ = 4142555136.

The previous prime is 13118156923. The next prime is 13118156939. The reversal of 13118156928 is 82965181131.

13118156928 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 81 + 569 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (13118156921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34225 + ... + 165552.

Almost surely, 2^13118156928 is an apocalyptic number.

13118156928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13118156928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20377356000).

13118156928 is an abundant number, since it is smaller than the sum of its proper divisors (27636555072).

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

13118156928 is a wasteful number, since it uses less digits than its factorization.

13118156928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199819 (or 199801 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The spelling of 13118156928 in words is "thirteen billion, one hundred eighteen million, one hundred fifty-six thousand, nine hundred twenty-eight".