78423339214944 has 144 divisors (see below), whose sum is σ = 237526946446608. Its totient is φ = 25434596408832.

The previous prime is 78423339214939. The next prime is 78423339214951. The reversal of 78423339214944 is 44941293332487.

78423339214944 is a `hidden beast` number, since 7 + 8 + 4 + 23 + 33 + 92 + 1 + 494 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136000207 + ... + 136575630.

It is an arithmetic number, because the mean of its divisors is an integer number (1649492683657).

Almost surely, 2^{78423339214944} is an apocalyptic number.

78423339214944 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

78423339214944 is an abundant number, since it is smaller than the sum of its proper divisors (159103607231664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78423339214944 is a wasteful number, since it uses less digits than its factorization.

78423339214944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272575899 (or 272575879 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 63.

The spelling of 78423339214944 in words is "seventy-eight trillion, four hundred twenty-three billion, three hundred thirty-nine million, two hundred fourteen thousand, nine hundred forty-four".