30520212104140 has 24 divisors (see below), whose sum is σ = 69919031366352. Its totient is φ = 11098258946880.

The previous prime is 30520212104099. The next prime is 30520212104147. The reversal of 30520212104140 is 4140121202503.

It is not an unprimeable number, because it can be changed into a prime (30520212104147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69364118199 + ... + 69364118638.

It is an arithmetic number, because the mean of its divisors is an integer number (2913292973598).

Almost surely, 2^{30520212104140} is an apocalyptic number.

It is an amenable number.

30520212104140 is an abundant number, since it is smaller than the sum of its proper divisors (39398819262212).

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

30520212104140 is a wasteful number, since it uses less digits than its factorization.

30520212104140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138728236857 (or 138728236855 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 30520212104140 its reverse (4140121202503), we get a palindrome (34660333306643).

The spelling of 30520212104140 in words is "thirty trillion, five hundred twenty billion, two hundred twelve million, one hundred four thousand, one hundred forty".