20043102110257 has 2 divisors, whose sum is σ = 20043102110258. Its totient is φ = 20043102110256.

The previous prime is 20043102110179. The next prime is 20043102110281. The reversal of 20043102110257 is 75201120134002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15740294499216 + 4302807611041 = 3967404^2 + 2074321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20043102110257 is a prime.

It is not a weakly prime, because it can be changed into another prime (20043502110257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021551055128 + 10021551055129.

It is an arithmetic number, because the mean of its divisors is an integer number (10021551055129).

Almost surely, 2^{20043102110257} is an apocalyptic number.

It is an amenable number.

20043102110257 is a deficient number, since it is larger than the sum of its proper divisors (1).

20043102110257 is an equidigital number, since it uses as much as digits as its factorization.

20043102110257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 20043102110257 its reverse (75201120134002), we get a palindrome (95244222244259).

The spelling of 20043102110257 in words is "twenty trillion, forty-three billion, one hundred two million, one hundred ten thousand, two hundred fifty-seven".