97912010191 has 2 divisors, whose sum is σ = 97912010192. Its totient is φ = 97912010190.

The previous prime is 97912010111. The next prime is 97912010201. The reversal of 97912010191 is 19101021979.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97912010191 - 2¹¹ = 97912008143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97912010111) 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, 48956005095 + 48956005096.

It is an arithmetic number, because the mean of its divisors is an integer number (48956005096).

Almost surely, 2^97912010191 is an apocalyptic number.

97912010191 is a deficient number, since it is larger than the sum of its proper divisors (1).

97912010191 is an equidigital number, since it uses as much as digits as its factorization.

97912010191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 40.

The spelling of 97912010191 in words is "ninety-seven billion, nine hundred twelve million, ten thousand, one hundred ninety-one".