97097185447 has 2 divisors, whose sum is σ = 97097185448. Its totient is φ = 97097185446.

The previous prime is 97097185433. The next prime is 97097185453. The reversal of 97097185447 is 74458179079.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97097185447 - 2¹⁹ = 97096661159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97097189447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48548592723 + 48548592724.

It is an arithmetic number, because the mean of its divisors is an integer number (48548592724).

Almost surely, 2^97097185447 is an apocalyptic number.

97097185447 is a deficient number, since it is larger than the sum of its proper divisors (1).

97097185447 is an equidigital number, since it uses as much as digits as its factorization.

97097185447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17781120, while the sum is 61.

The spelling of 97097185447 in words is "ninety-seven billion, ninety-seven million, one hundred eighty-five thousand, four hundred forty-seven".