130166732731661 has 2 divisors, whose sum is σ = 130166732731662. Its totient is φ = 130166732731660.

The previous prime is 130166732731627. The next prime is 130166732731723. The reversal of 130166732731661 is 166137237661031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81078408966025 + 49088323765636 = 9004355^2 + 7006306^2 .

It is a cyclic number.

It is not a de Polignac number, because 130166732731661 - 2¹⁸ = 130166732469517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130166732701661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65083366365830 + 65083366365831.

It is an arithmetic number, because the mean of its divisors is an integer number (65083366365831).

Almost surely, 2^{130166732731661} is an apocalyptic number.

It is an amenable number.

130166732731661 is a deficient number, since it is larger than the sum of its proper divisors (1).

130166732731661 is an equidigital number, since it uses as much as digits as its factorization.

130166732731661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3429216, while the sum is 53.

The spelling of 130166732731661 in words is "one hundred thirty trillion, one hundred sixty-six billion, seven hundred thirty-two million, seven hundred thirty-one thousand, six hundred sixty-one".