78847134611 has 16 divisors (see below), whose sum is σ = 90232746240. Its totient is φ = 67492038240.

The previous prime is 78847134577. The next prime is 78847134637. The reversal of 78847134611 is 11643174887.

It is a cyclic number.

It is not a de Polignac number, because 78847134611 - 2²² = 78842940307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78847134611.

It is not an unprimeable number, because it can be changed into a prime (78847134011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29452205 + ... + 29454881.

It is an arithmetic number, because the mean of its divisors is an integer number (5639546640).

Almost surely, 2^78847134611 is an apocalyptic number.

78847134611 is a deficient number, since it is larger than the sum of its proper divisors (11385611629).

78847134611 is a wasteful number, since it uses less digits than its factorization.

78847134611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6794.

The product of its digits is 903168, while the sum is 50.

The spelling of 78847134611 in words is "seventy-eight billion, eight hundred forty-seven million, one hundred thirty-four thousand, six hundred eleven".