30012106505 has 4 divisors (see below), whose sum is σ = 36014527812. Its totient is φ = 24009685200.

The previous prime is 30012106499. The next prime is 30012106529. The reversal of 30012106505 is 50560121003.

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 3185925136 + 26826181369 = 56444^2 + 163787^2 .

It is not a de Polignac number, because 30012106505 - 2¹⁶ = 30012040969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3001210646 + ... + 3001210655.

It is an arithmetic number, because the mean of its divisors is an integer number (9003631953).

Almost surely, 2^30012106505 is an apocalyptic number.

It is an amenable number.

30012106505 is a deficient number, since it is larger than the sum of its proper divisors (6002421307).

30012106505 is an equidigital number, since it uses as much as digits as its factorization.

30012106505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6002421306.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 30012106505 its reverse (50560121003), we get a palindrome (80572227508).

The spelling of 30012106505 in words is "thirty billion, twelve million, one hundred six thousand, five hundred five".