97620980789 has 2 divisors, whose sum is σ = 97620980790. Its totient is φ = 97620980788.

The previous prime is 97620980759. The next prime is 97620980791. The reversal of 97620980789 is 98708902679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82507966564 + 15113014225 = 287242^2 + 122935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97620980789 is a prime.

Together with 97620980791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97620980719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48810490394 + 48810490395.

It is an arithmetic number, because the mean of its divisors is an integer number (48810490395).

Almost surely, 2^97620980789 is an apocalyptic number.

It is an amenable number.

97620980789 is a deficient number, since it is larger than the sum of its proper divisors (1).

97620980789 is an equidigital number, since it uses as much as digits as its factorization.

97620980789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27433728, while the sum is 65.

The spelling of 97620980789 in words is "ninety-seven billion, six hundred twenty million, nine hundred eighty thousand, seven hundred eighty-nine".