78438968176 has 40 divisors (see below), whose sum is σ = 156936384000. Its totient is φ = 37940199360.

The previous prime is 78438968161. The next prime is 78438968189. The reversal of 78438968176 is 67186983487.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370175 + ... + 1426273.

It is an arithmetic number, because the mean of its divisors is an integer number (3923409600).

Almost surely, 2^78438968176 is an apocalyptic number.

It is an amenable number.

78438968176 is an abundant number, since it is smaller than the sum of its proper divisors (78497415824).

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

78438968176 is a wasteful number, since it uses less digits than its factorization.

78438968176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58957 (or 58951 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 67.

The spelling of 78438968176 in words is "seventy-eight billion, four hundred thirty-eight million, nine hundred sixty-eight thousand, one hundred seventy-six".