30120549138 has 32 divisors (see below), whose sum is σ = 68069044800. Its totient is φ = 9870009408.

The previous prime is 30120549103. The next prime is 30120549149. The reversal of 30120549138 is 83194502103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4723831 + ... + 4730202.

It is an arithmetic number, because the mean of its divisors is an integer number (2127157650).

Almost surely, 2^30120549138 is an apocalyptic number.

30120549138 is an abundant number, since it is smaller than the sum of its proper divisors (37948495662).

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

30120549138 is a wasteful number, since it uses less digits than its factorization.

30120549138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9454103 (or 9454097 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 30120549138 in words is "thirty billion, one hundred twenty million, five hundred forty-nine thousand, one hundred thirty-eight".