61705361111 has 2 divisors, whose sum is σ = 61705361112. Its totient is φ = 61705361110.

The previous prime is 61705361083. The next prime is 61705361129. The reversal of 61705361111 is 11116350716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61705361111 - 2³⁰ = 60631619287 is a prime.

It is a super-2 number, since 2×61705361111² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61705361411) 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, 30852680555 + 30852680556.

It is an arithmetic number, because the mean of its divisors is an integer number (30852680556).

Almost surely, 2^61705361111 is an apocalyptic number.

61705361111 is a deficient number, since it is larger than the sum of its proper divisors (1).

61705361111 is an equidigital number, since it uses as much as digits as its factorization.

61705361111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 32.

The spelling of 61705361111 in words is "sixty-one billion, seven hundred five million, three hundred sixty-one thousand, one hundred eleven".