13978934211 has 16 divisors (see below), whose sum is σ = 20391608448. Its totient is φ = 8447659200.

The previous prime is 13978934209. The next prime is 13978934219. The reversal of 13978934211 is 11243987931.

13978934211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13978934211 - 2¹ = 13978934209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13978934219) 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 15 ways as a sum of consecutive naturals, for example, 598930 + ... + 621831.

It is an arithmetic number, because the mean of its divisors is an integer number (1274475528).

Almost surely, 2^13978934211 is an apocalyptic number.

13978934211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13978934211 is a deficient number, since it is larger than the sum of its proper divisors (6412674237).

13978934211 is a wasteful number, since it uses less digits than its factorization.

13978934211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221122.

The product of its digits is 326592, while the sum is 48.

The spelling of 13978934211 in words is "thirteen billion, nine hundred seventy-eight million, nine hundred thirty-four thousand, two hundred eleven".