61641384424097 has 2 divisors, whose sum is σ = 61641384424098. Its totient is φ = 61641384424096.

The previous prime is 61641384423989. The next prime is 61641384424111. The reversal of 61641384424097 is 79042448314616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59614474123681 + 2026910300416 = 7721041^2 + 1423696^2 .

It is a cyclic number.

It is not a de Polignac number, because 61641384424097 - 2⁸ = 61641384423841 is a prime.

It is not a weakly prime, because it can be changed into another prime (61641384474097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30820692212048 + 30820692212049.

It is an arithmetic number, because the mean of its divisors is an integer number (30820692212049).

Almost surely, 2^{61641384424097} is an apocalyptic number.

It is an amenable number.

61641384424097 is a deficient number, since it is larger than the sum of its proper divisors (1).

61641384424097 is an equidigital number, since it uses as much as digits as its factorization.

61641384424097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27869184, while the sum is 59.

The spelling of 61641384424097 in words is "sixty-one trillion, six hundred forty-one billion, three hundred eighty-four million, four hundred twenty-four thousand, ninety-seven".