14665139638 has 4 divisors (see below), whose sum is σ = 21997709460. Its totient is φ = 7332569818.

The previous prime is 14665139633. The next prime is 14665139677. The reversal of 14665139638 is 83693156641.

14665139638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83693156641 = 25889 ⋅3232769.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14665139633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3666284908 + ... + 3666284911.

It is an arithmetic number, because the mean of its divisors is an integer number (5499427365).

Almost surely, 2^14665139638 is an apocalyptic number.

14665139638 is a deficient number, since it is larger than the sum of its proper divisors (7332569822).

14665139638 is an equidigital number, since it uses as much as digits as its factorization.

14665139638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7332569821.

The product of its digits is 2799360, while the sum is 52.

The spelling of 14665139638 in words is "fourteen billion, six hundred sixty-five million, one hundred thirty-nine thousand, six hundred thirty-eight".