20113005235 has 16 divisors (see below), whose sum is σ = 25562285856. Its totient is φ = 15139798528.

The previous prime is 20113005233. The next prime is 20113005239. The reversal of 20113005235 is 53250031102.

It is not a de Polignac number, because 20113005235 - 2¹ = 20113005233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113005233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303297 + ... + 363613.

It is an arithmetic number, because the mean of its divisors is an integer number (1597642866).

Almost surely, 2^20113005235 is an apocalyptic number.

20113005235 is a deficient number, since it is larger than the sum of its proper divisors (5449280621).

20113005235 is a wasteful number, since it uses less digits than its factorization.

20113005235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64262.

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 20113005235 its reverse (53250031102), we get a palindrome (73363036337).

The spelling of 20113005235 in words is "twenty billion, one hundred thirteen million, five thousand, two hundred thirty-five".