61110045641 has 2 divisors, whose sum is σ = 61110045642. Its totient is φ = 61110045640.

The previous prime is 61110045587. The next prime is 61110045683. The reversal of 61110045641 is 14654001116.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45030537616 + 16079508025 = 212204^2 + 126805^2 .

It is a cyclic number.

It is not a de Polignac number, because 61110045641 - 2¹⁰ = 61110044617 is a prime.

It is not a weakly prime, because it can be changed into another prime (61110045041) 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, 30555022820 + 30555022821.

It is an arithmetic number, because the mean of its divisors is an integer number (30555022821).

Almost surely, 2^61110045641 is an apocalyptic number.

It is an amenable number.

61110045641 is a deficient number, since it is larger than the sum of its proper divisors (1).

61110045641 is an equidigital number, since it uses as much as digits as its factorization.

61110045641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 61110045641 its reverse (14654001116), we get a palindrome (75764046757).

The spelling of 61110045641 in words is "sixty-one billion, one hundred ten million, forty-five thousand, six hundred forty-one".