61705262893 has 2 divisors, whose sum is σ = 61705262894. Its totient is φ = 61705262892.

The previous prime is 61705262873. The next prime is 61705262903. The reversal of 61705262893 is 39826250716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60832769449 + 872493444 = 246643^2 + 29538^2 .

It is a cyclic number.

It is not a de Polignac number, because 61705262893 - 2¹³ = 61705254701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61705262873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30852631446 + 30852631447.

It is an arithmetic number, because the mean of its divisors is an integer number (30852631447).

Almost surely, 2^61705262893 is an apocalyptic number.

It is an amenable number.

61705262893 is a deficient number, since it is larger than the sum of its proper divisors (1).

61705262893 is an equidigital number, since it uses as much as digits as its factorization.

61705262893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 61705262893 in words is "sixty-one billion, seven hundred five million, two hundred sixty-two thousand, eight hundred ninety-three".