97586989769 has 2 divisors, whose sum is σ = 97586989770. Its totient is φ = 97586989768.

The previous prime is 97586989739. The next prime is 97586989781. The reversal of 97586989769 is 96798968579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63699702544 + 33887287225 = 252388^2 + 184085^2 .

It is an emirp because it is prime and its reverse (96798968579) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97586989769 is a prime.

It is a super-2 number, since 2×97586989769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97586989739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48793494884 + 48793494885.

It is an arithmetic number, because the mean of its divisors is an integer number (48793494885).

Almost surely, 2^97586989769 is an apocalyptic number.

It is an amenable number.

97586989769 is a deficient number, since it is larger than the sum of its proper divisors (1).

97586989769 is an equidigital number, since it uses as much as digits as its factorization.

97586989769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3703553280, while the sum is 83.

The spelling of 97586989769 in words is "ninety-seven billion, five hundred eighty-six million, nine hundred eighty-nine thousand, seven hundred sixty-nine".