1292052017209 has 2 divisors, whose sum is σ = 1292052017210. Its totient is φ = 1292052017208.

The previous prime is 1292052017089. The next prime is 1292052017213. The reversal of 1292052017209 is 9027102502921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1060339753984 + 231712263225 = 1029728^2 + 481365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1292052017209 - 2¹¹ = 1292052015161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1292052017279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646026008604 + 646026008605.

It is an arithmetic number, because the mean of its divisors is an integer number (646026008605).

Almost surely, 2^{1292052017209} is an apocalyptic number.

It is an amenable number.

1292052017209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292052017209 is an equidigital number, since it uses as much as digits as its factorization.

1292052017209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 1292052017209 in words is "one trillion, two hundred ninety-two billion, fifty-two million, seventeen thousand, two hundred nine".