30878120804139 has 32 divisors (see below), whose sum is σ = 52282718781440. Its totient is φ = 17643863330496.

The previous prime is 30878120804137. The next prime is 30878120804191. The reversal of 30878120804139 is 93140802187803.

It is a happy number.

30878120804139 is a `hidden beast` number, since 30 + 8 + 78 + 120 + 8 + 0 + 413 + 9 = 666.

It is not a de Polignac number, because 30878120804139 - 2¹ = 30878120804137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30878120804137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 718422 + ... + 7891284.

It is an arithmetic number, because the mean of its divisors is an integer number (1633834961920).

Almost surely, 2^{30878120804139} is an apocalyptic number.

30878120804139 is a deficient number, since it is larger than the sum of its proper divisors (21404597977301).

30878120804139 is a wasteful number, since it uses less digits than its factorization.

30878120804139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195656 (or 7195650 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 30878120804139 in words is "thirty trillion, eight hundred seventy-eight billion, one hundred twenty million, eight hundred four thousand, one hundred thirty-nine".