20040435053 has 4 divisors (see below), whose sum is σ = 20046598908. Its totient is φ = 20034271200.

The previous prime is 20040435017. The next prime is 20040435073. The reversal of 20040435053 is 35053404002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19925580964 + 114854089 = 141158^2 + 10717^2 .

It is a cyclic number.

It is not a de Polignac number, because 20040435053 - 2⁸ = 20040434797 is a prime.

It is a super-2 number, since 2×20040435053² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20040435073) 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, 3077048 + ... + 3083553.

It is an arithmetic number, because the mean of its divisors is an integer number (5011649727).

Almost surely, 2^20040435053 is an apocalyptic number.

It is an amenable number.

20040435053 is a deficient number, since it is larger than the sum of its proper divisors (6163855).

20040435053 is an equidigital number, since it uses as much as digits as its factorization.

20040435053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6163854.

The product of its (nonzero) digits is 7200, while the sum is 26.

Adding to 20040435053 its reverse (35053404002), we get a palindrome (55093839055).

The spelling of 20040435053 in words is "twenty billion, forty million, four hundred thirty-five thousand, fifty-three".