13878236964 has 12 divisors (see below), whose sum is σ = 32382552944. Its totient is φ = 4626078984.

The previous prime is 13878236963. The next prime is 13878237029. The reversal of 13878236964 is 46963287831.

13878236964 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 (12).

It is a super-2 number, since 2×13878236964² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13878236963) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 578259862 + ... + 578259885.

Almost surely, 2^13878236964 is an apocalyptic number.

It is an amenable number.

13878236964 is an abundant number, since it is smaller than the sum of its proper divisors (18504315980).

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

13878236964 is a wasteful number, since it uses less digits than its factorization.

13878236964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156519754 (or 1156519752 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 57.

The spelling of 13878236964 in words is "thirteen billion, eight hundred seventy-eight million, two hundred thirty-six thousand, nine hundred sixty-four".