20045435541 has 4 divisors (see below), whose sum is σ = 26727247392. Its totient is φ = 13363623692.

The previous prime is 20045435513. The next prime is 20045435549. The reversal of 20045435541 is 14553454002.

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 20045435541 - 2¹³ = 20045427349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045435549) 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, 3340905921 + ... + 3340905926.

It is an arithmetic number, because the mean of its divisors is an integer number (6681811848).

Almost surely, 2^20045435541 is an apocalyptic number.

It is an amenable number.

20045435541 is a deficient number, since it is larger than the sum of its proper divisors (6681811851).

20045435541 is an equidigital number, since it uses as much as digits as its factorization.

20045435541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681811850.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 20045435541 its reverse (14553454002), we get a palindrome (34598889543).

The spelling of 20045435541 in words is "twenty billion, forty-five million, four hundred thirty-five thousand, five hundred forty-one".