20011041142409 has 2 divisors, whose sum is σ = 20011041142410. Its totient is φ = 20011041142408.

The previous prime is 20011041142387. The next prime is 20011041142423. The reversal of 20011041142409 is 90424114011002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18841459455625 + 1169581686784 = 4340675^2 + 1081472^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011041142409 - 2⁴⁴ = 2418855097993 is a prime.

It is not a weakly prime, because it can be changed into another prime (20011041142429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005520571204 + 10005520571205.

It is an arithmetic number, because the mean of its divisors is an integer number (10005520571205).

Almost surely, 2^{20011041142409} is an apocalyptic number.

It is an amenable number.

20011041142409 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011041142409 is an equidigital number, since it uses as much as digits as its factorization.

20011041142409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 20011041142409 in words is "twenty trillion, eleven billion, forty-one million, one hundred forty-two thousand, four hundred nine".