13878464511 has 16 divisors (see below), whose sum is σ = 18634786560. Its totient is φ = 9187276800.

The previous prime is 13878464447. The next prime is 13878464521. The reversal of 13878464511 is 11546487831.

It is not a de Polignac number, because 13878464511 - 2⁶ = 13878464447 is a prime.

It is a super-3 number, since 3×13878464511³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13878464521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1503436 + ... + 1512638.

It is an arithmetic number, because the mean of its divisors is an integer number (1164674160).

Almost surely, 2^13878464511 is an apocalyptic number.

13878464511 is a deficient number, since it is larger than the sum of its proper divisors (4756322049).

13878464511 is a wasteful number, since it uses less digits than its factorization.

13878464511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12686.

The product of its digits is 645120, while the sum is 48.

The spelling of 13878464511 in words is "thirteen billion, eight hundred seventy-eight million, four hundred sixty-four thousand, five hundred eleven".