97742119875221 has 2 divisors, whose sum is σ = 97742119875222. Its totient is φ = 97742119875220.

The previous prime is 97742119875203. The next prime is 97742119875383. The reversal of 97742119875221 is 12257891124779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82889844436996 + 14852275438225 = 9104386^2 + 3853865^2 .

It is a cyclic number.

It is not a de Polignac number, because 97742119875221 - 2³⁰ = 97741046133397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97742119805221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48871059937610 + 48871059937611.

It is an arithmetic number, because the mean of its divisors is an integer number (48871059937611).

Almost surely, 2^{97742119875221} is an apocalyptic number.

It is an amenable number.

97742119875221 is a deficient number, since it is larger than the sum of its proper divisors (1).

97742119875221 is an equidigital number, since it uses as much as digits as its factorization.

97742119875221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35562240, while the sum is 65.

The spelling of 97742119875221 in words is "ninety-seven trillion, seven hundred forty-two billion, one hundred nineteen million, eight hundred seventy-five thousand, two hundred twenty-one".