13994646567 has 32 divisors (see below), whose sum is σ = 20928167424. Its totient is φ = 8243625600.

The previous prime is 13994646559. The next prime is 13994646587. The reversal of 13994646567 is 76564649931.

It is a happy number.

It is not a de Polignac number, because 13994646567 - 2³ = 13994646559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13994646567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13994646527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1253293 + ... + 1264409.

It is an arithmetic number, because the mean of its divisors is an integer number (654005232).

Almost surely, 2^13994646567 is an apocalyptic number.

13994646567 is a deficient number, since it is larger than the sum of its proper divisors (6933520857).

13994646567 is a wasteful number, since it uses less digits than its factorization.

13994646567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12199.

The product of its digits is 29393280, while the sum is 60.

The spelling of 13994646567 in words is "thirteen billion, nine hundred ninety-four million, six hundred forty-six thousand, five hundred sixty-seven".