13963647813 has 32 divisors (see below), whose sum is σ = 19460528640. Its totient is φ = 8895096000.

The previous prime is 13963647811. The next prime is 13963647821. The reversal of 13963647813 is 31874636931.

It is not a de Polignac number, because 13963647813 - 2¹ = 13963647811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13963647811) 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, 3557470 + ... + 3561392.

It is an arithmetic number, because the mean of its divisors is an integer number (608141520).

Almost surely, 2^13963647813 is an apocalyptic number.

It is an amenable number.

13963647813 is a deficient number, since it is larger than the sum of its proper divisors (5496880827).

13963647813 is a wasteful number, since it uses less digits than its factorization.

13963647813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4369.

The product of its digits is 1959552, while the sum is 51.

The spelling of 13963647813 in words is "thirteen billion, nine hundred sixty-three million, six hundred forty-seven thousand, eight hundred thirteen".