20105240295 has 32 divisors (see below), whose sum is σ = 36769512960. Its totient is φ = 9189555840.

The previous prime is 20105240251. The next prime is 20105240297. The reversal of 20105240295 is 59204250102.

It is not a de Polignac number, because 20105240295 - 2⁶ = 20105240231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20105240297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1012765 + ... + 1032425.

It is an arithmetic number, because the mean of its divisors is an integer number (1149047280).

Almost surely, 2^20105240295 is an apocalyptic number.

20105240295 is a deficient number, since it is larger than the sum of its proper divisors (16664272665).

20105240295 is a wasteful number, since it uses less digits than its factorization.

20105240295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29415.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 20105240295 its reverse (59204250102), we get a palindrome (79309490397).

The spelling of 20105240295 in words is "twenty billion, one hundred five million, two hundred forty thousand, two hundred ninety-five".