61121250041 has 2 divisors, whose sum is σ = 61121250042. Its totient is φ = 61121250040.

The previous prime is 61121250023. The next prime is 61121250079. The reversal of 61121250041 is 14005212116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57667219600 + 3454030441 = 240140^2 + 58771^2 .

It is a cyclic number.

It is not a de Polignac number, because 61121250041 - 2⁶ = 61121249977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61121249989 and 61121250016.

It is not a weakly prime, because it can be changed into another prime (61121256041) 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, 30560625020 + 30560625021.

It is an arithmetic number, because the mean of its divisors is an integer number (30560625021).

Almost surely, 2^61121250041 is an apocalyptic number.

It is an amenable number.

61121250041 is a deficient number, since it is larger than the sum of its proper divisors (1).

61121250041 is an equidigital number, since it uses as much as digits as its factorization.

61121250041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 61121250041 its reverse (14005212116), we get a palindrome (75126462157).

The spelling of 61121250041 in words is "sixty-one billion, one hundred twenty-one million, two hundred fifty thousand, forty-one".