78947489185 has 8 divisors (see below), whose sum is σ = 94738717440. Its totient is φ = 63156837744.

The previous prime is 78947489161. The next prime is 78947489237. The reversal of 78947489185 is 58198474987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78947489185 - 2²⁷ = 78813271457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259824 + ... + 474766.

It is an arithmetic number, because the mean of its divisors is an integer number (11842339680).

Almost surely, 2^78947489185 is an apocalyptic number.

It is an amenable number.

78947489185 is a deficient number, since it is larger than the sum of its proper divisors (15791228255).

78947489185 is a wasteful number, since it uses less digits than its factorization.

78947489185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288407.

The product of its digits is 162570240, while the sum is 70.

The spelling of 78947489185 in words is "seventy-eight billion, nine hundred forty-seven million, four hundred eighty-nine thousand, one hundred eighty-five".