42300382185661 has 2 divisors, whose sum is σ = 42300382185662. Its totient is φ = 42300382185660.

The previous prime is 42300382185587. The next prime is 42300382185679. The reversal of 42300382185661 is 16658128300324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38186405635225 + 4113976550436 = 6179515^2 + 2028294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42300382185661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42300362185661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21150191092830 + 21150191092831.

It is an arithmetic number, because the mean of its divisors is an integer number (21150191092831).

Almost surely, 2^{42300382185661} is an apocalyptic number.

It is an amenable number.

42300382185661 is a deficient number, since it is larger than the sum of its proper divisors (1).

42300382185661 is an equidigital number, since it uses as much as digits as its factorization.

42300382185661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 42300382185661 in words is "forty-two trillion, three hundred billion, three hundred eighty-two million, one hundred eighty-five thousand, six hundred sixty-one".