78660107438 has 16 divisors (see below), whose sum is σ = 130826648880. Its totient is φ = 35168452800.

The previous prime is 78660107417. The next prime is 78660107507. The reversal of 78660107438 is 83470106687.

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, 29305703 + ... + 29308386.

It is an arithmetic number, because the mean of its divisors is an integer number (8176665555).

Almost surely, 2^78660107438 is an apocalyptic number.

78660107438 is a deficient number, since it is larger than the sum of its proper divisors (52166541442).

78660107438 is a wasteful number, since it uses less digits than its factorization.

78660107438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58614163.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The spelling of 78660107438 in words is "seventy-eight billion, six hundred sixty million, one hundred seven thousand, four hundred thirty-eight".