97851299191 has 2 divisors, whose sum is σ = 97851299192. Its totient is φ = 97851299190.

The previous prime is 97851299171. The next prime is 97851299309. The reversal of 97851299191 is 19199215879.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97851299191 - 2²⁹ = 97314428279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97851299171) 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, 48925649595 + 48925649596.

It is an arithmetic number, because the mean of its divisors is an integer number (48925649596).

Almost surely, 2^97851299191 is an apocalyptic number.

97851299191 is a deficient number, since it is larger than the sum of its proper divisors (1).

97851299191 is an equidigital number, since it uses as much as digits as its factorization.

97851299191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3674160, while the sum is 61.

The spelling of 97851299191 in words is "ninety-seven billion, eight hundred fifty-one million, two hundred ninety-nine thousand, one hundred ninety-one".