1009647831161 has 2 divisors, whose sum is σ = 1009647831162. Its totient is φ = 1009647831160.

The previous prime is 1009647831107. The next prime is 1009647831169. The reversal of 1009647831161 is 1611387469001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 682183491136 + 327464340025 = 825944^2 + 572245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009647831161 - 2⁶ = 1009647831097 is a prime.

It is a super-2 number, since 2×1009647831161² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1009647831169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504823915580 + 504823915581.

It is an arithmetic number, because the mean of its divisors is an integer number (504823915581).

Almost surely, 2^{1009647831161} is an apocalyptic number.

It is an amenable number.

1009647831161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009647831161 is an equidigital number, since it uses as much as digits as its factorization.

1009647831161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 1009647831161 in words is "one trillion, nine billion, six hundred forty-seven million, eight hundred thirty-one thousand, one hundred sixty-one".