6838644844951 has 4 divisors (see below), whose sum is σ = 6842916329904. Its totient is φ = 6834373360000.

The previous prime is 6838644844921. The next prime is 6838644844963. The reversal of 6838644844951 is 1594484468386.

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 6838644844951 - 2³³ = 6830054910359 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 (6838644844921) 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, 2135740075 + ... + 2135743276.

It is an arithmetic number, because the mean of its divisors is an integer number (1710729082476).

Almost surely, 2^{6838644844951} is an apocalyptic number.

6838644844951 is a deficient number, since it is larger than the sum of its proper divisors (4271484953).

6838644844951 is a wasteful number, since it uses less digits than its factorization.

6838644844951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4271484952.

The product of its digits is 637009920, while the sum is 70.

The spelling of 6838644844951 in words is "six trillion, eight hundred thirty-eight billion, six hundred forty-four million, eight hundred forty-four thousand, nine hundred fifty-one".