78709179066 has 16 divisors (see below), whose sum is σ = 179906695104. Its totient is φ = 22488336864.

The previous prime is 78709179013. The next prime is 78709179127. The reversal of 78709179066 is 66097190787.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937013995 + ... + 937014078.

It is an arithmetic number, because the mean of its divisors is an integer number (11244168444).

Almost surely, 2^78709179066 is an apocalyptic number.

78709179066 is an abundant number, since it is smaller than the sum of its proper divisors (101197516038).

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

78709179066 is a wasteful number, since it uses less digits than its factorization.

78709179066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874028085.

The product of its (nonzero) digits is 8001504, while the sum is 60.

The spelling of 78709179066 in words is "seventy-eight billion, seven hundred nine million, one hundred seventy-nine thousand, sixty-six".