15438680027 has 4 divisors (see below), whose sum is σ = 15507912000. Its totient is φ = 15369448056.

The previous prime is 15438680017. The next prime is 15438680041. The reversal of 15438680027 is 72008683451.

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 15438680027 - 2²⁸ = 15170244571 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 15438680027.

It is not an unprimeable number, because it can be changed into a prime (15438680017) 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, 34615652 + ... + 34616097.

It is an arithmetic number, because the mean of its divisors is an integer number (3876978000).

Almost surely, 2^15438680027 is an apocalyptic number.

15438680027 is a deficient number, since it is larger than the sum of its proper divisors (69231973).

15438680027 is an equidigital number, since it uses as much as digits as its factorization.

15438680027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69231972.

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 15438680027 in words is "fifteen billion, four hundred thirty-eight million, six hundred eighty thousand, twenty-seven".