30078505128 has 128 divisors (see below), whose sum is σ = 90360288000. Its totient is φ = 8161413120.

The previous prime is 30078505091. The next prime is 30078505151. The reversal of 30078505128 is 82150587003.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 246588 + ... + 347796.

It is an arithmetic number, because the mean of its divisors is an integer number (705939750).

Almost surely, 2^30078505128 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 30078505128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45180144000).

30078505128 is an abundant number, since it is smaller than the sum of its proper divisors (60281782872).

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

30078505128 is a wasteful number, since it uses less digits than its factorization.

30078505128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101315 (or 101311 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 30078505128 in words is "thirty billion, seventy-eight million, five hundred five thousand, one hundred twenty-eight".