91610908860971 has 2 divisors, whose sum is σ = 91610908860972. Its totient is φ = 91610908860970.

The previous prime is 91610908860967. The next prime is 91610908860973. The reversal of 91610908860971 is 17906880901619.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91610908860971 - 2² = 91610908860967 is a prime.

Together with 91610908860973, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 91610908860898 and 91610908860907.

It is not a weakly prime, because it can be changed into another prime (91610908860973) 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, 45805454430485 + 45805454430486.

It is an arithmetic number, because the mean of its divisors is an integer number (45805454430486).

Almost surely, 2^{91610908860971} is an apocalyptic number.

91610908860971 is a deficient number, since it is larger than the sum of its proper divisors (1).

91610908860971 is an equidigital number, since it uses as much as digits as its factorization.

91610908860971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11757312, while the sum is 65.

The spelling of 91610908860971 in words is "ninety-one trillion, six hundred ten billion, nine hundred eight million, eight hundred sixty thousand, nine hundred seventy-one".