20012151105 has 48 divisors (see below), whose sum is σ = 34885914960. Its totient is φ = 10612353024.

The previous prime is 20012151097. The next prime is 20012151149. The reversal of 20012151105 is 50115121002.

It can be written as a sum of positive squares in 8 ways, for example, as 2957619456 + 17054531649 = 54384^2 + 130593^2 .

It is not a de Polignac number, because 20012151105 - 2³ = 20012151097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6435291 + ... + 6438399.

It is an arithmetic number, because the mean of its divisors is an integer number (726789895).

Almost surely, 2^20012151105 is an apocalyptic number.

It is an amenable number.

20012151105 is a deficient number, since it is larger than the sum of its proper divisors (14873763855).

20012151105 is a wasteful number, since it uses less digits than its factorization.

20012151105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890 (or 3887 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

Adding to 20012151105 its reverse (50115121002), we get a palindrome (70127272107).

The spelling of 20012151105 in words is "twenty billion, twelve million, one hundred fifty-one thousand, one hundred five".