6238639437847 has 4 divisors (see below), whose sum is σ = 6246837387936. Its totient is φ = 6230441487760.

The previous prime is 6238639437773. The next prime is 6238639437857. The reversal of 6238639437847 is 7487349368326.

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 6238639437847 - 2³⁵ = 6204279699479 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 (6238639437857) 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, 4098973903 + ... + 4098975424.

It is an arithmetic number, because the mean of its divisors is an integer number (1561709346984).

Almost surely, 2^{6238639437847} is an apocalyptic number.

6238639437847 is a deficient number, since it is larger than the sum of its proper divisors (8197950089).

6238639437847 is an equidigital number, since it uses as much as digits as its factorization.

6238639437847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8197950088.

The product of its digits is 877879296, while the sum is 70.

The spelling of 6238639437847 in words is "six trillion, two hundred thirty-eight billion, six hundred thirty-nine million, four hundred thirty-seven thousand, eight hundred forty-seven".