20320442111051 has 2 divisors, whose sum is σ = 20320442111052. Its totient is φ = 20320442111050.

The previous prime is 20320442111023. The next prime is 20320442111087. The reversal of 20320442111051 is 15011124402302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20320442111051 - 2¹⁸ = 20320441848907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20320442111051.

It is not a weakly prime, because it can be changed into another prime (20320442111551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160221055525 + 10160221055526.

It is an arithmetic number, because the mean of its divisors is an integer number (10160221055526).

Almost surely, 2^{20320442111051} is an apocalyptic number.

20320442111051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320442111051 is an equidigital number, since it uses as much as digits as its factorization.

20320442111051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 20320442111051 its reverse (15011124402302), we get a palindrome (35331566513353).

The spelling of 20320442111051 in words is "twenty trillion, three hundred twenty billion, four hundred forty-two million, one hundred eleven thousand, fifty-one".