61742552301691 has 2 divisors, whose sum is σ = 61742552301692. Its totient is φ = 61742552301690.

The previous prime is 61742552301659. The next prime is 61742552301697. The reversal of 61742552301691 is 19610325524716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61742552301691 - 2⁵ = 61742552301659 is a prime.

It is not a weakly prime, because it can be changed into another prime (61742552301697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30871276150845 + 30871276150846.

It is an arithmetic number, because the mean of its divisors is an integer number (30871276150846).

Almost surely, 2^{61742552301691} is an apocalyptic number.

61742552301691 is a deficient number, since it is larger than the sum of its proper divisors (1).

61742552301691 is an equidigital number, since it uses as much as digits as its factorization.

61742552301691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 61742552301691 in words is "sixty-one trillion, seven hundred forty-two billion, five hundred fifty-two million, three hundred one thousand, six hundred ninety-one".