78308434008 has 96 divisors (see below), whose sum is σ = 242761209600. Its totient is φ = 22338949824.

The previous prime is 78308433997. The next prime is 78308434021. The reversal of 78308434008 is 80043480387.

It is a happy number.

It is a super-2 number, since 2×78308434008² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 203253 + ... + 444891.

It is an arithmetic number, because the mean of its divisors is an integer number (2528762600).

Almost surely, 2^78308434008 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 78308434008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121380604800).

78308434008 is an abundant number, since it is smaller than the sum of its proper divisors (164452775592).

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

78308434008 is a wasteful number, since it uses less digits than its factorization.

78308434008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242301 (or 242294 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 78308434008 in words is "seventy-eight billion, three hundred eight million, four hundred thirty-four thousand, eight".