78841675438 has 32 divisors (see below), whose sum is σ = 126277291008. Its totient is φ = 36788774400.

The previous prime is 78841675411. The next prime is 78841675469. The reversal of 78841675438 is 83457614887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9586168 + ... + 9594388.

It is an arithmetic number, because the mean of its divisors is an integer number (3946165344).

Almost surely, 2^78841675438 is an apocalyptic number.

78841675438 is a deficient number, since it is larger than the sum of its proper divisors (47435615570).

78841675438 is a wasteful number, since it uses less digits than its factorization.

78841675438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10588.

The product of its digits is 36126720, while the sum is 61.

The spelling of 78841675438 in words is "seventy-eight billion, eight hundred forty-one million, six hundred seventy-five thousand, four hundred thirty-eight".