13678835643 has 12 divisors (see below), whose sum is σ = 21554529048. Its totient is φ = 8290203360.

The previous prime is 13678835641. The next prime is 13678835669. The reversal of 13678835643 is 34653887631.

13678835643 is a `hidden beast` number, since 1 + 3 + 6 + 78 + 8 + 3 + 564 + 3 = 666.

It is not a de Polignac number, because 13678835643 - 2¹ = 13678835641 is a prime.

It is a super-2 number, since 2×13678835643² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13678835643.

It is not an unprimeable number, because it can be changed into a prime (13678835641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69084930 + ... + 69085127.

It is an arithmetic number, because the mean of its divisors is an integer number (1796210754).

Almost surely, 2^13678835643 is an apocalyptic number.

13678835643 is a deficient number, since it is larger than the sum of its proper divisors (7875693405).

13678835643 is a wasteful number, since it uses less digits than its factorization.

13678835643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138170074 (or 138170071 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 13678835643 in words is "thirteen billion, six hundred seventy-eight million, eight hundred thirty-five thousand, six hundred forty-three".