78850858328 has 64 divisors (see below), whose sum is σ = 171025499520. Its totient is φ = 33683161600.

The previous prime is 78850858321. The next prime is 78850858337. The reversal of 78850858328 is 82385805887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78850858321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 983183 + ... + 1060353.

It is an arithmetic number, because the mean of its divisors is an integer number (2672273430).

Almost surely, 2^78850858328 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 78850858328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85512749760).

78850858328 is an abundant number, since it is smaller than the sum of its proper divisors (92174641192).

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

78850858328 is a wasteful number, since it uses less digits than its factorization.

78850858328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77888 (or 77884 counting only the distinct ones).

The product of its (nonzero) digits is 34406400, while the sum is 62.

The spelling of 78850858328 in words is "seventy-eight billion, eight hundred fifty million, eight hundred fifty-eight thousand, three hundred twenty-eight".