178875578872 has 8 divisors (see below), whose sum is σ = 335391710400. Its totient is φ = 89437789432.

The previous prime is 178875578857. The next prime is 178875578881. The reversal of 178875578872 is 278875578871.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 178875578795 and 178875578804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11179723672 + ... + 11179723687.

It is an arithmetic number, because the mean of its divisors is an integer number (41923963800).

Almost surely, 2^178875578872 is an apocalyptic number.

It is an amenable number.

178875578872 is a deficient number, since it is larger than the sum of its proper divisors (156516131528).

178875578872 is a wasteful number, since it uses less digits than its factorization.

178875578872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22359447365 (or 22359447361 counting only the distinct ones).

The product of its digits is 491724800, while the sum is 73.

Subtracting 178875578872 from its reverse (278875578871), we obtain a palindrome (99999999999).

The spelling of 178875578872 in words is "one hundred seventy-eight billion, eight hundred seventy-five million, five hundred seventy-eight thousand, eight hundred seventy-two".