61100559941 has 2 divisors, whose sum is σ = 61100559942. Its totient is φ = 61100559940.

The previous prime is 61100559931. The next prime is 61100559967. The reversal of 61100559941 is 14995500116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56963368900 + 4137191041 = 238670^2 + 64321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61100559941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61100559901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30550279970 + 30550279971.

It is an arithmetic number, because the mean of its divisors is an integer number (30550279971).

Almost surely, 2^61100559941 is an apocalyptic number.

It is an amenable number.

61100559941 is a deficient number, since it is larger than the sum of its proper divisors (1).

61100559941 is an equidigital number, since it uses as much as digits as its factorization.

61100559941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 41.

The spelling of 61100559941 in words is "sixty-one billion, one hundred million, five hundred fifty-nine thousand, nine hundred forty-one".