61012300061 has 2 divisors, whose sum is σ = 61012300062. Its totient is φ = 61012300060.

The previous prime is 61012300043. The next prime is 61012300199. The reversal of 61012300061 is 16000321016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39484074436 + 21528225625 = 198706^2 + 146725^2 .

It is a cyclic number.

It is not a de Polignac number, because 61012300061 - 2¹⁸ = 61012037917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61012300001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30506150030 + 30506150031.

It is an arithmetic number, because the mean of its divisors is an integer number (30506150031).

Almost surely, 2^61012300061 is an apocalyptic number.

It is an amenable number.

61012300061 is a deficient number, since it is larger than the sum of its proper divisors (1).

61012300061 is an equidigital number, since it uses as much as digits as its factorization.

61012300061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 61012300061 its reverse (16000321016), we get a palindrome (77012621077).

The spelling of 61012300061 in words is "sixty-one billion, twelve million, three hundred thousand, sixty-one".