8039642742161 has 2 divisors, whose sum is σ = 8039642742162. Its totient is φ = 8039642742160.

The previous prime is 8039642742137. The next prime is 8039642742169. The reversal of 8039642742161 is 1612472469308.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7630682492161 + 408960250000 = 2762369^2 + 639500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8039642742161 is a prime.

It is not a weakly prime, because it can be changed into another prime (8039642742169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4019821371080 + 4019821371081.

It is an arithmetic number, because the mean of its divisors is an integer number (4019821371081).

Almost surely, 2^{8039642742161} is an apocalyptic number.

It is an amenable number.

8039642742161 is a deficient number, since it is larger than the sum of its proper divisors (1).

8039642742161 is an equidigital number, since it uses as much as digits as its factorization.

8039642742161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 8039642742161 in words is "eight trillion, thirty-nine billion, six hundred forty-two million, seven hundred forty-two thousand, one hundred sixty-one".