1405412163209 has 2 divisors, whose sum is σ = 1405412163210. Its totient is φ = 1405412163208.

The previous prime is 1405412163193. The next prime is 1405412163299. The reversal of 1405412163209 is 9023612145041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1400198890000 + 5213273209 = 1183300^2 + 72203^2 .

It is a cyclic number.

It is not a de Polignac number, because 1405412163209 - 2⁴ = 1405412163193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1405412163299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702706081604 + 702706081605.

It is an arithmetic number, because the mean of its divisors is an integer number (702706081605).

Almost surely, 2^{1405412163209} is an apocalyptic number.

It is an amenable number.

1405412163209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405412163209 is an equidigital number, since it uses as much as digits as its factorization.

1405412163209 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 38.

The spelling of 1405412163209 in words is "one trillion, four hundred five billion, four hundred twelve million, one hundred sixty-three thousand, two hundred nine".