20442203953 has 2 divisors, whose sum is σ = 20442203954. Its totient is φ = 20442203952.

The previous prime is 20442203939. The next prime is 20442204011. The reversal of 20442203953 is 35930224402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20367000369 + 75203584 = 142713^2 + 8672^2 .

It is a cyclic number.

It is not a de Polignac number, because 20442203953 - 2⁵ = 20442203921 is a prime.

It is not a weakly prime, because it can be changed into another prime (20442203753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10221101976 + 10221101977.

It is an arithmetic number, because the mean of its divisors is an integer number (10221101977).

Almost surely, 2^20442203953 is an apocalyptic number.

It is an amenable number.

20442203953 is a deficient number, since it is larger than the sum of its proper divisors (1).

20442203953 is an equidigital number, since it uses as much as digits as its factorization.

20442203953 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 34.

The spelling of 20442203953 in words is "twenty billion, four hundred forty-two million, two hundred three thousand, nine hundred fifty-three".