78875534525448 has 32 divisors (see below), whose sum is σ = 207567196120800. Its totient is φ = 24908063534208.

The previous prime is 78875534525443. The next prime is 78875534525449. The reversal of 78875534525448 is 84452543557887.

It is a self number, because there is not a number n which added to its sum of digits gives 78875534525448.

It is not an unprimeable number, because it can be changed into a prime (78875534525443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86486331261 + ... + 86486332172.

It is an arithmetic number, because the mean of its divisors is an integer number (6486474878775).

Almost surely, 2^{78875534525448} is an apocalyptic number.

It is an amenable number.

78875534525448 is an abundant number, since it is smaller than the sum of its proper divisors (128691661595352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78875534525448 is a wasteful number, since it uses less digits than its factorization.

78875534525448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172972663461 (or 172972663457 counting only the distinct ones).

The product of its digits is 6021120000, while the sum is 75.

The spelling of 78875534525448 in words is "seventy-eight trillion, eight hundred seventy-five billion, five hundred thirty-four million, five hundred twenty-five thousand, four hundred forty-eight".