97495691057 has 2 divisors, whose sum is σ = 97495691058. Its totient is φ = 97495691056.

The previous prime is 97495691039. The next prime is 97495691131. The reversal of 97495691057 is 75019659479.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95335207696 + 2160483361 = 308764^2 + 46481^2 .

It is an emirp because it is prime and its reverse (75019659479) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97495691057 - 2¹⁴ = 97495674673 is a prime.

It is not a weakly prime, because it can be changed into another prime (97495694057) 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, 48747845528 + 48747845529.

It is an arithmetic number, because the mean of its divisors is an integer number (48747845529).

Almost surely, 2^97495691057 is an apocalyptic number.

It is an amenable number.

97495691057 is a deficient number, since it is larger than the sum of its proper divisors (1).

97495691057 is an equidigital number, since it uses as much as digits as its factorization.

97495691057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21432600, while the sum is 62.

The spelling of 97495691057 in words is "ninety-seven billion, four hundred ninety-five million, six hundred ninety-one thousand, fifty-seven".