16239385476947 has 4 divisors (see below), whose sum is σ = 16240448487936. Its totient is φ = 16238322465960.

The previous prime is 16239385476869. The next prime is 16239385477019. The reversal of 16239385476947 is 74967458393261.

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 16239385476947 - 2²⁸ = 16239117041491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16239385476647) 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, 531482579 + ... + 531513132.

It is an arithmetic number, because the mean of its divisors is an integer number (4060112121984).

Almost surely, 2^{16239385476947} is an apocalyptic number.

16239385476947 is a deficient number, since it is larger than the sum of its proper divisors (1063010989).

16239385476947 is a wasteful number, since it uses less digits than its factorization.

16239385476947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063010988.

The product of its digits is 1646023680, while the sum is 74.

The spelling of 16239385476947 in words is "sixteen trillion, two hundred thirty-nine billion, three hundred eighty-five million, four hundred seventy-six thousand, nine hundred forty-seven".