20112153305 has 8 divisors (see below), whose sum is σ = 24138731400. Its totient is φ = 16086957696.

The previous prime is 20112153253. The next prime is 20112153311. The reversal of 20112153305 is 50335121102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 950118976 + 19162034329 = 30824^2 + 138427^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20112153305 - 2¹² = 20112149209 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313340 + ... + 372029.

It is an arithmetic number, because the mean of its divisors is an integer number (3017341425).

Almost surely, 2^20112153305 is an apocalyptic number.

It is an amenable number.

20112153305 is a deficient number, since it is larger than the sum of its proper divisors (4026578095).

20112153305 is an equidigital number, since it uses as much as digits as its factorization.

20112153305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691243.

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

Adding to 20112153305 its reverse (50335121102), we get a palindrome (70447274407).

The spelling of 20112153305 in words is "twenty billion, one hundred twelve million, one hundred fifty-three thousand, three hundred five".