78825384571648 has 144 divisors (see below), whose sum is σ = 195723901600416. Its totient is φ = 31128082513920.

The previous prime is 78825384571613. The next prime is 78825384571649. The reversal of 78825384571648 is 84617548352887.

It is not an unprimeable number, because it can be changed into a prime (78825384571649) 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, 62707911 + ... + 63952582.

It is an arithmetic number, because the mean of its divisors is an integer number (1359193761114).

Almost surely, 2^{78825384571648} is an apocalyptic number.

It is an amenable number.

78825384571648 is an abundant number, since it is smaller than the sum of its proper divisors (116898517028768).

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

78825384571648 is a wasteful number, since it uses less digits than its factorization.

78825384571648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126660550 (or 126660536 counting only the distinct ones).

The product of its digits is 2890137600, while the sum is 76.

The spelling of 78825384571648 in words is "seventy-eight trillion, eight hundred twenty-five billion, three hundred eighty-four million, five hundred seventy-one thousand, six hundred forty-eight".