61706191746091 has 2 divisors, whose sum is σ = 61706191746092. Its totient is φ = 61706191746090.

The previous prime is 61706191746041. The next prime is 61706191746163. The reversal of 61706191746091 is 19064719160716.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61706191746091 - 2⁷ = 61706191745963 is a prime.

It is not a weakly prime, because it can be changed into another prime (61706191746041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30853095873045 + 30853095873046.

It is an arithmetic number, because the mean of its divisors is an integer number (30853095873046).

Almost surely, 2^{61706191746091} is an apocalyptic number.

61706191746091 is a deficient number, since it is larger than the sum of its proper divisors (1).

61706191746091 is an equidigital number, since it uses as much as digits as its factorization.

61706191746091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The spelling of 61706191746091 in words is "sixty-one trillion, seven hundred six billion, one hundred ninety-one million, seven hundred forty-six thousand, ninety-one".