20542231041 has 4 divisors (see below), whose sum is σ = 27389641392. Its totient is φ = 13694820692.

The previous prime is 20542231037. The next prime is 20542231049. The reversal of 20542231041 is 14013224502.

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 20542231041 - 2² = 20542231037 is a prime.

It is a super-2 number, since 2×20542231041² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20542231049) 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, 3423705171 + ... + 3423705176.

It is an arithmetic number, because the mean of its divisors is an integer number (6847410348).

Almost surely, 2^20542231041 is an apocalyptic number.

It is an amenable number.

20542231041 is a deficient number, since it is larger than the sum of its proper divisors (6847410351).

20542231041 is an equidigital number, since it uses as much as digits as its factorization.

20542231041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6847410350.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 20542231041 its reverse (14013224502), we get a palindrome (34555455543).

The spelling of 20542231041 in words is "twenty billion, five hundred forty-two million, two hundred thirty-one thousand, forty-one".