78889648795 has 4 divisors (see below), whose sum is σ = 94667578560. Its totient is φ = 63111719032.

The previous prime is 78889648727. The next prime is 78889648823. The reversal of 78889648795 is 59784698887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59784698887 = 1171 ⋅51054397.

It is a cyclic number.

It is not a de Polignac number, because 78889648795 - 2¹¹ = 78889646747 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7888964875 + ... + 7888964884.

It is an arithmetic number, because the mean of its divisors is an integer number (23666894640).

Almost surely, 2^78889648795 is an apocalyptic number.

78889648795 is a deficient number, since it is larger than the sum of its proper divisors (15777929765).

78889648795 is a wasteful number, since it uses less digits than its factorization.

78889648795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15777929764.

The product of its digits is 1950842880, while the sum is 79.

The spelling of 78889648795 in words is "seventy-eight billion, eight hundred eighty-nine million, six hundred forty-eight thousand, seven hundred ninety-five".