14001538643 has 4 divisors (see below), whose sum is σ = 14001960960. Its totient is φ = 14001116328.

The previous prime is 14001538637. The next prime is 14001538669. The reversal of 14001538643 is 34683510041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 14001538643 - 2¹⁰ = 14001537619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14001568643) 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, 156755 + ... + 229292.

It is an arithmetic number, because the mean of its divisors is an integer number (3500490240).

Almost surely, 2^14001538643 is an apocalyptic number.

14001538643 is a deficient number, since it is larger than the sum of its proper divisors (422317).

14001538643 is an equidigital number, since it uses as much as digits as its factorization.

14001538643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422316.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 14001538643 in words is "fourteen billion, one million, five hundred thirty-eight thousand, six hundred forty-three".