20443609501201 has 2 divisors, whose sum is σ = 20443609501202. Its totient is φ = 20443609501200.

The previous prime is 20443609501169. The next prime is 20443609501247. The reversal of 20443609501201 is 10210590634402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11832912010000 + 8610697491201 = 3439900^2 + 2934399^2 .

It is a cyclic number.

It is not a de Polignac number, because 20443609501201 - 2⁵ = 20443609501169 is a prime.

It is not a weakly prime, because it can be changed into another prime (20443609501261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221804750600 + 10221804750601.

It is an arithmetic number, because the mean of its divisors is an integer number (10221804750601).

Almost surely, 2^{20443609501201} is an apocalyptic number.

It is an amenable number.

20443609501201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20443609501201 is an equidigital number, since it uses as much as digits as its factorization.

20443609501201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 20443609501201 in words is "twenty trillion, four hundred forty-three billion, six hundred nine million, five hundred one thousand, two hundred one".