20435102113 has 4 divisors (see below), whose sum is σ = 20458245808. Its totient is φ = 20411958420.

The previous prime is 20435102101. The next prime is 20435102143. The reversal of 20435102113 is 31120153402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20435102113 - 2⁹ = 20435101601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20435102143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11570523 + ... + 11572288.

It is an arithmetic number, because the mean of its divisors is an integer number (5114561452).

Almost surely, 2^20435102113 is an apocalyptic number.

It is an amenable number.

20435102113 is a deficient number, since it is larger than the sum of its proper divisors (23143695).

20435102113 is an equidigital number, since it uses as much as digits as its factorization.

20435102113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23143694.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 20435102113 its reverse (31120153402), we get a palindrome (51555255515).

The spelling of 20435102113 in words is "twenty billion, four hundred thirty-five million, one hundred two thousand, one hundred thirteen".