30156212705 has 16 divisors (see below), whose sum is σ = 39552136704. Its totient is φ = 21973405440.

The previous prime is 30156212657. The next prime is 30156212731. The reversal of 30156212705 is 50721265103.

It is not a de Polignac number, because 30156212705 - 2¹⁶ = 30156147169 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5719607 + ... + 5724876.

It is an arithmetic number, because the mean of its divisors is an integer number (2472008544).

Almost surely, 2^30156212705 is an apocalyptic number.

It is an amenable number.

30156212705 is a deficient number, since it is larger than the sum of its proper divisors (9395923999).

30156212705 is a wasteful number, since it uses less digits than its factorization.

30156212705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11444536.

The product of its (nonzero) digits is 12600, while the sum is 32.

Adding to 30156212705 its reverse (50721265103), we get a palindrome (80877477808).

The spelling of 30156212705 in words is "thirty billion, one hundred fifty-six million, two hundred twelve thousand, seven hundred five".