78688638762 has 16 divisors (see below), whose sum is σ = 158526018432. Its totient is φ = 26038089440.

The previous prime is 78688638761. The next prime is 78688638767. The reversal of 78688638762 is 26783688687.

It is not an unprimeable number, because it can be changed into a prime (78688638761) by changing a digit.

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, 47863314 + ... + 47864957.

It is an arithmetic number, because the mean of its divisors is an integer number (9907876152).

Almost surely, 2^78688638762 is an apocalyptic number.

78688638762 is an abundant number, since it is smaller than the sum of its proper divisors (79837379670).

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

78688638762 is a wasteful number, since it uses less digits than its factorization.

78688638762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95728413.

The product of its digits is 260112384, while the sum is 69.

The spelling of 78688638762 in words is "seventy-eight billion, six hundred eighty-eight million, six hundred thirty-eight thousand, seven hundred sixty-two".