20434002053 has 4 divisors (see below), whose sum is σ = 20448086208. Its totient is φ = 20419917900.

The previous prime is 20434002041. The next prime is 20434002073. The reversal of 20434002053 is 35020043402.

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 20434002053 - 2⁴ = 20434002037 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434002073) 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, 7039901 + ... + 7042802.

It is an arithmetic number, because the mean of its divisors is an integer number (5112021552).

Almost surely, 2^20434002053 is an apocalyptic number.

It is an amenable number.

20434002053 is a deficient number, since it is larger than the sum of its proper divisors (14084155).

20434002053 is a wasteful number, since it uses less digits than its factorization.

20434002053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14084154.

The product of its (nonzero) digits is 2880, while the sum is 23.

Adding to 20434002053 its reverse (35020043402), we get a palindrome (55454045455).

The spelling of 20434002053 in words is "twenty billion, four hundred thirty-four million, two thousand, fifty-three".