13161244064 has 24 divisors (see below), whose sum is σ = 27274947840. Its totient is φ = 6234273216.

The previous prime is 13161244021. The next prime is 13161244079. The reversal of 13161244064 is 46044216131.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 13161244064.

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 3 ways as a sum of consecutive naturals, for example, 10822784 + ... + 10823999.

It is an arithmetic number, because the mean of its divisors is an integer number (1136456160).

Almost surely, 2^13161244064 is an apocalyptic number.

It is an amenable number.

13161244064 is an abundant number, since it is smaller than the sum of its proper divisors (14113703776).

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

13161244064 is a wasteful number, since it uses less digits than its factorization.

13161244064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21646812 (or 21646804 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 13161244064 in words is "thirteen billion, one hundred sixty-one million, two hundred forty-four thousand, sixty-four".