78811874244 has 288 divisors, whose sum is σ = 223417958400. Its totient is φ = 23328264960.

The previous prime is 78811874179. The next prime is 78811874327. The reversal of 78811874244 is 44247811887.

It is a super-2 number, since 2×78811874244² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 177904687 + ... + 177905129.

It is an arithmetic number, because the mean of its divisors is an integer number (775756800).

Almost surely, 2^78811874244 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 78811874244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111708979200).

78811874244 is an abundant number, since it is smaller than the sum of its proper divisors (144606084156).

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

78811874244 is a wasteful number, since it uses less digits than its factorization.

78811874244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 770 counting only the distinct ones).

The product of its digits is 3211264, while the sum is 54.

The spelling of 78811874244 in words is "seventy-eight billion, eight hundred eleven million, eight hundred seventy-four thousand, two hundred forty-four".