61258613441 has 2 divisors, whose sum is σ = 61258613442. Its totient is φ = 61258613440.

The previous prime is 61258613417. The next prime is 61258613447. The reversal of 61258613441 is 14431685216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40024003600 + 21234609841 = 200060^2 + 145721^2 .

It is a cyclic number.

It is not a de Polignac number, because 61258613441 - 2¹⁰ = 61258612417 is a prime.

It is not a weakly prime, because it can be changed into another prime (61258613447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30629306720 + 30629306721.

It is an arithmetic number, because the mean of its divisors is an integer number (30629306721).

Almost surely, 2^61258613441 is an apocalyptic number.

It is an amenable number.

61258613441 is a deficient number, since it is larger than the sum of its proper divisors (1).

61258613441 is an equidigital number, since it uses as much as digits as its factorization.

61258613441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 41.

The spelling of 61258613441 in words is "sixty-one billion, two hundred fifty-eight million, six hundred thirteen thousand, four hundred forty-one".