78967779072 has 864 divisors, whose sum is σ = 280603459584. Its totient is φ = 19508428800.

The previous prime is 78967779071. The next prime is 78967779197. The reversal of 78967779072 is 27097776987.

It is a junction number, because it is equal to n+sod(n) for n = 78967778988 and 78967779006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78967779071) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 621793473 + ... + 621793599.

Almost surely, 2^78967779072 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 78967779072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140301729792).

78967779072 is an abundant number, since it is smaller than the sum of its proper divisors (201635680512).

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

78967779072 is a wasteful number, since it uses less digits than its factorization.

78967779072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 130691232, while the sum is 69.

The spelling of 78967779072 in words is "seventy-eight billion, nine hundred sixty-seven million, seven hundred seventy-nine thousand, seventy-two".