13118640864 has 48 divisors (see below), whose sum is σ = 39355924608. Its totient is φ = 3748182912.

The previous prime is 13118640859. The next prime is 13118640889. The reversal of 13118640864 is 46804681131.

13118640864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×13118640864² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9760222 + ... + 9761565.

It is an arithmetic number, because the mean of its divisors is an integer number (819915096).

Almost surely, 2^13118640864 is an apocalyptic number.

13118640864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13118640864 is an abundant number, since it is smaller than the sum of its proper divisors (26237283744).

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

13118640864 is a wasteful number, since it uses less digits than its factorization.

13118640864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19521807 (or 19521799 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 13118640864 in words is "thirteen billion, one hundred eighteen million, six hundred forty thousand, eight hundred sixty-four".