61761288241 has 2 divisors, whose sum is σ = 61761288242. Its totient is φ = 61761288240.

The previous prime is 61761288233. The next prime is 61761288311. The reversal of 61761288241 is 14288216716.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49764686400 + 11996601841 = 223080^2 + 109529^2 .

It is a cyclic number.

It is not a de Polignac number, because 61761288241 - 2³ = 61761288233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61761288191 and 61761288200.

It is not a weakly prime, because it can be changed into another prime (61761288041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30880644120 + 30880644121.

It is an arithmetic number, because the mean of its divisors is an integer number (30880644121).

Almost surely, 2^61761288241 is an apocalyptic number.

It is an amenable number.

61761288241 is a deficient number, since it is larger than the sum of its proper divisors (1).

61761288241 is an equidigital number, since it uses as much as digits as its factorization.

61761288241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 46.

The spelling of 61761288241 in words is "sixty-one billion, seven hundred sixty-one million, two hundred eighty-eight thousand, two hundred forty-one".