78806382870 has 16 divisors (see below), whose sum is σ = 189135318960. Its totient is φ = 21015035424.

The previous prime is 78806382869. The next prime is 78806382913. The reversal of 78806382870 is 7828360887.

It is a self number, because there is not a number n which added to its sum of digits gives 78806382870.

It is a congruent 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, 1313439685 + ... + 1313439744.

It is an arithmetic number, because the mean of its divisors is an integer number (11820957435).

Almost surely, 2^78806382870 is an apocalyptic number.

78806382870 is an abundant number, since it is smaller than the sum of its proper divisors (110328936090).

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

78806382870 is a wasteful number, since it uses less digits than its factorization.

78806382870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626879439.

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 78806382870 in words is "seventy-eight billion, eight hundred six million, three hundred eighty-two thousand, eight hundred seventy".