30120125052553 has 4 divisors (see below), whose sum is σ = 30458553424020. Its totient is φ = 29781696681088.

The previous prime is 30120125052541. The next prime is 30120125052569. The reversal of 30120125052553 is 35525052102103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4919293330704 + 25200831721849 = 2217948^2 + 5020043^2 .

It is a cyclic number.

It is not a de Polignac number, because 30120125052553 - 2²⁵ = 30120091498121 is a prime.

It is a super-2 number, since 2×30120125052553² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30120125052653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169214185600 + ... + 169214185777.

It is an arithmetic number, because the mean of its divisors is an integer number (7614638356005).

Almost surely, 2^{30120125052553} is an apocalyptic number.

It is an amenable number.

30120125052553 is a deficient number, since it is larger than the sum of its proper divisors (338428371467).

30120125052553 is an equidigital number, since it uses as much as digits as its factorization.

30120125052553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338428371466.

The product of its (nonzero) digits is 45000, while the sum is 34.

Adding to 30120125052553 its reverse (35525052102103), we get a palindrome (65645177154656).

The spelling of 30120125052553 in words is "thirty trillion, one hundred twenty billion, one hundred twenty-five million, fifty-two thousand, five hundred fifty-three".