78790868772 has 192 divisors, whose sum is σ = 233308422144. Its totient is φ = 20101023360.

The previous prime is 78790868771. The next prime is 78790868797. The reversal of 78790868772 is 27786809787.

It is a junction number, because it is equal to n+sod(n) for n = 78790868697 and 78790868706.

It is not an unprimeable number, because it can be changed into a prime (78790868771) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 23709103 + ... + 23712425.

It is an arithmetic number, because the mean of its divisors is an integer number (1215148032).

Almost surely, 2^78790868772 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 78790868772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116654211072).

78790868772 is an abundant number, since it is smaller than the sum of its proper divisors (154517553372).

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

78790868772 is a wasteful number, since it uses less digits than its factorization.

78790868772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798 (or 3796 counting only the distinct ones).

The product of its (nonzero) digits is 132765696, while the sum is 69.

The spelling of 78790868772 in words is "seventy-eight billion, seven hundred ninety million, eight hundred sixty-eight thousand, seven hundred seventy-two".