20611343053 has 4 divisors (see below), whose sum is σ = 23555820640. Its totient is φ = 17666865468.

The previous prime is 20611343021. The next prime is 20611343063. The reversal of 20611343053 is 35034311602.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35034311602 = 2 ⋅17517155801.

It is not a de Polignac number, because 20611343053 - 2⁵ = 20611343021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20611343063) 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, 1472238783 + ... + 1472238796.

It is an arithmetic number, because the mean of its divisors is an integer number (5888955160).

Almost surely, 2^20611343053 is an apocalyptic number.

It is an amenable number.

20611343053 is a deficient number, since it is larger than the sum of its proper divisors (2944477587).

20611343053 is an equidigital number, since it uses as much as digits as its factorization.

20611343053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944477586.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 20611343053 its reverse (35034311602), we get a palindrome (55645654655).

The spelling of 20611343053 in words is "twenty billion, six hundred eleven million, three hundred forty-three thousand, fifty-three".