13013147808 has 72 divisors (see below), whose sum is σ = 37094803200. Its totient is φ = 4327323264.

The previous prime is 13013147773. The next prime is 13013147813. The reversal of 13013147808 is 80874131031.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66753 + ... + 174591.

It is an arithmetic number, because the mean of its divisors is an integer number (515205600).

Almost surely, 2^13013147808 is an apocalyptic number.

13013147808 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 13013147808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18547401600).

13013147808 is an abundant number, since it is smaller than the sum of its proper divisors (24081655392).

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

13013147808 is a wasteful number, since it uses less digits than its factorization.

13013147808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108274 (or 108263 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

Adding to 13013147808 its reverse (80874131031), we get a palindrome (93887278839).

The spelling of 13013147808 in words is "thirteen billion, thirteen million, one hundred forty-seven thousand, eight hundred eight".