97790928617 has 2 divisors, whose sum is σ = 97790928618. Its totient is φ = 97790928616.

The previous prime is 97790928611. The next prime is 97790928619. The reversal of 97790928617 is 71682909779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65648175961 + 32142752656 = 256219^2 + 179284^2 .

It is a cyclic number.

It is not a de Polignac number, because 97790928617 - 2¹⁶ = 97790863081 is a prime.

It is a super-3 number, since 3×97790928617³ (a number of 34 digits) contains 333 as substring.

Together with 97790928619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97790928611) 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, 48895464308 + 48895464309.

It is an arithmetic number, because the mean of its divisors is an integer number (48895464309).

Almost surely, 2^97790928617 is an apocalyptic number.

It is an amenable number.

97790928617 is a deficient number, since it is larger than the sum of its proper divisors (1).

97790928617 is an equidigital number, since it uses as much as digits as its factorization.

97790928617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24004512, while the sum is 65.

The spelling of 97790928617 in words is "ninety-seven billion, seven hundred ninety million, nine hundred twenty-eight thousand, six hundred seventeen".