971004504191 has 2 divisors, whose sum is σ = 971004504192. Its totient is φ = 971004504190.

The previous prime is 971004504179. The next prime is 971004504209. The reversal of 971004504191 is 191405400179.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-971004504191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (971004504121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485502252095 + 485502252096.

It is an arithmetic number, because the mean of its divisors is an integer number (485502252096).

Almost surely, 2^971004504191 is an apocalyptic number.

971004504191 is a deficient number, since it is larger than the sum of its proper divisors (1).

971004504191 is an equidigital number, since it uses as much as digits as its factorization.

971004504191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 41.

The spelling of 971004504191 in words is "nine hundred seventy-one billion, four million, five hundred four thousand, one hundred ninety-one".