120006816409 has 2 divisors, whose sum is σ = 120006816410. Its totient is φ = 120006816408.

The previous prime is 120006816373. The next prime is 120006816529. The reversal of 120006816409 is 904618600021.

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., 120006816400 + 9 = 346420^2 + 3^2 .

It is an emirp because it is prime and its reverse (904618600021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120006816409 - 2²⁵ = 119973261977 is a prime.

It is not a weakly prime, because it can be changed into another prime (120006811409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60003408204 + 60003408205.

It is an arithmetic number, because the mean of its divisors is an integer number (60003408205).

Almost surely, 2^120006816409 is an apocalyptic number.

It is an amenable number.

120006816409 is a deficient number, since it is larger than the sum of its proper divisors (1).

120006816409 is an equidigital number, since it uses as much as digits as its factorization.

120006816409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 120006816409 in words is "one hundred twenty billion, six million, eight hundred sixteen thousand, four hundred nine".