78848538571 has 16 divisors (see below), whose sum is σ = 89015781888. Its totient is φ = 69210741600.

The previous prime is 78848538569. The next prime is 78848538581. The reversal of 78848538571 is 17583584887.

It is not a de Polignac number, because 78848538571 - 2¹ = 78848538569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78848538511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 686115 + ... + 792748.

It is an arithmetic number, because the mean of its divisors is an integer number (5563486368).

Almost surely, 2^78848538571 is an apocalyptic number.

78848538571 is a deficient number, since it is larger than the sum of its proper divisors (10167243317).

78848538571 is a wasteful number, since it uses less digits than its factorization.

78848538571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479042.

The product of its digits is 60211200, while the sum is 64.

The spelling of 78848538571 in words is "seventy-eight billion, eight hundred forty-eight million, five hundred thirty-eight thousand, five hundred seventy-one".