20442020051 has 2 divisors, whose sum is σ = 20442020052. Its totient is φ = 20442020050.

The previous prime is 20442020033. The next prime is 20442020069. The reversal of 20442020051 is 15002024402.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (20442020033) and next prime (20442020069).

It is a cyclic number.

It is not a de Polignac number, because 20442020051 - 2⁶ = 20442019987 is a prime.

It is not a weakly prime, because it can be changed into another prime (20442020251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221010025 + 10221010026.

It is an arithmetic number, because the mean of its divisors is an integer number (10221010026).

Almost surely, 2^20442020051 is an apocalyptic number.

20442020051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20442020051 is an equidigital number, since it uses as much as digits as its factorization.

20442020051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 20442020051 its reverse (15002024402), we get a palindrome (35444044453).

The spelling of 20442020051 in words is "twenty billion, four hundred forty-two million, twenty thousand, fifty-one".