10420118809 has 2 divisors, whose sum is σ = 10420118810. Its totient is φ = 10420118808.

The previous prime is 10420118803. The next prime is 10420118861. The reversal of 10420118809 is 90881102401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9841235209 + 578883600 = 99203^2 + 24060^2 .

It is a cyclic number.

It is not a de Polignac number, because 10420118809 - 2¹⁷ = 10419987737 is a prime.

It is not a weakly prime, because it can be changed into another prime (10420118803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5210059404 + 5210059405.

It is an arithmetic number, because the mean of its divisors is an integer number (5210059405).

Almost surely, 2^10420118809 is an apocalyptic number.

It is an amenable number.

10420118809 is a deficient number, since it is larger than the sum of its proper divisors (1).

10420118809 is an equidigital number, since it uses as much as digits as its factorization.

10420118809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 10420118809 in words is "ten billion, four hundred twenty million, one hundred eighteen thousand, eight hundred nine".