97066665389 has 2 divisors, whose sum is σ = 97066665390. Its totient is φ = 97066665388.

The previous prime is 97066665361. The next prime is 97066665403. The reversal of 97066665389 is 98356666079.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96469254025 + 597411364 = 310595^2 + 24442^2 .

It is a cyclic number.

It is not a de Polignac number, because 97066665389 - 2¹⁶ = 97066599853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97066662389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48533332694 + 48533332695.

It is an arithmetic number, because the mean of its divisors is an integer number (48533332695).

Almost surely, 2^97066665389 is an apocalyptic number.

It is an amenable number.

97066665389 is a deficient number, since it is larger than the sum of its proper divisors (1).

97066665389 is an equidigital number, since it uses as much as digits as its factorization.

97066665389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88179840, while the sum is 65.

The spelling of 97066665389 in words is "ninety-seven billion, sixty-six million, six hundred sixty-five thousand, three hundred eighty-nine".