78823834144452 has 576 divisors, whose sum is σ = 224947164682240. Its totient is φ = 23173661952000.

The previous prime is 78823834144423. The next prime is 78823834144477. The reversal of 78823834144452 is 25444143832887.

78823834144452 is a `hidden beast` number, since 7 + 8 + 8 + 2 + 3 + 8 + 34 + 144 + 452 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 78823834144452.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 11995710327 + ... + 11995716897.

Almost surely, 2^{78823834144452} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78823834144452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112473582341120).

78823834144452 is an abundant number, since it is smaller than the sum of its proper divisors (146123330537788).

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

78823834144452 is a wasteful number, since it uses less digits than its factorization.

78823834144452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6904 (or 6899 counting only the distinct ones).

The product of its digits is 165150720, while the sum is 63.

The spelling of 78823834144452 in words is "seventy-eight trillion, eight hundred twenty-three billion, eight hundred thirty-four million, one hundred forty-four thousand, four hundred fifty-two".