78927738895 has 16 divisors (see below), whose sum is σ = 95230192320. Its totient is φ = 62797768704.

The previous prime is 78927738887. The next prime is 78927738917. The reversal of 78927738895 is 59883772987.

It is a cyclic number.

It is not a de Polignac number, because 78927738895 - 2³ = 78927738887 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4398201 + ... + 4416109.

It is an arithmetic number, because the mean of its divisors is an integer number (5951887020).

Almost surely, 2^78927738895 is an apocalyptic number.

78927738895 is a deficient number, since it is larger than the sum of its proper divisors (16302453425).

78927738895 is a wasteful number, since it uses less digits than its factorization.

78927738895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22674.

The product of its digits is 426746880, while the sum is 73.

The spelling of 78927738895 in words is "seventy-eight billion, nine hundred twenty-seven million, seven hundred thirty-eight thousand, eight hundred ninety-five".