15380791727 has 4 divisors (see below), whose sum is σ = 17578047696. Its totient is φ = 13183535760.

The previous prime is 15380791717. The next prime is 15380791739. The reversal of 15380791727 is 72719708351.

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 15380791727 - 2¹⁴ = 15380775343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15380791717) 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, 1098627974 + ... + 1098627987.

It is an arithmetic number, because the mean of its divisors is an integer number (4394511924).

Almost surely, 2^15380791727 is an apocalyptic number.

15380791727 is a deficient number, since it is larger than the sum of its proper divisors (2197255969).

15380791727 is an equidigital number, since it uses as much as digits as its factorization.

15380791727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197255968.

The product of its (nonzero) digits is 740880, while the sum is 50.

The spelling of 15380791727 in words is "fifteen billion, three hundred eighty million, seven hundred ninety-one thousand, seven hundred twenty-seven".