13963207543 has 4 divisors (see below), whose sum is σ = 13967210808. Its totient is φ = 13959204280.

The previous prime is 13963207513. The next prime is 13963207547. The reversal of 13963207543 is 34570236931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34570236931 = 7817 ⋅4422443.

It is a cyclic number.

It is not a de Polignac number, because 13963207543 - 2³³ = 5373272951 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13963207543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13963207547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1996396 + ... + 2003377.

It is an arithmetic number, because the mean of its divisors is an integer number (3491802702).

Almost surely, 2^13963207543 is an apocalyptic number.

13963207543 is a deficient number, since it is larger than the sum of its proper divisors (4003265).

13963207543 is an equidigital number, since it uses as much as digits as its factorization.

13963207543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003264.

The product of its (nonzero) digits is 408240, while the sum is 43.

The spelling of 13963207543 in words is "thirteen billion, nine hundred sixty-three million, two hundred seven thousand, five hundred forty-three".