78729882308 has 72 divisors (see below), whose sum is σ = 176176988064. Its totient is φ = 30439718400.

The previous prime is 78729882293. The next prime is 78729882337. The reversal of 78729882308 is 80328892787.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143060 + ... + 421812.

It is an arithmetic number, because the mean of its divisors is an integer number (2446902612).

Almost surely, 2^78729882308 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 78729882308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88088494032).

78729882308 is an abundant number, since it is smaller than the sum of its proper divisors (97447105756).

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

78729882308 is a wasteful number, since it uses less digits than its factorization.

78729882308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278913 (or 278904 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 62.

The spelling of 78729882308 in words is "seventy-eight billion, seven hundred twenty-nine million, eight hundred eighty-two thousand, three hundred eight".