97586389652491 has 2 divisors, whose sum is σ = 97586389652492. Its totient is φ = 97586389652490.

The previous prime is 97586389652483. The next prime is 97586389652597. The reversal of 97586389652491 is 19425698368579.

It is a weak prime.

It is an emirp because it is prime and its reverse (19425698368579) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97586389652491 - 2³ = 97586389652483 is a prime.

It is not a weakly prime, because it can be changed into another prime (97586389652441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48793194826245 + 48793194826246.

It is an arithmetic number, because the mean of its divisors is an integer number (48793194826246).

Almost surely, 2^{97586389652491} is an apocalyptic number.

97586389652491 is a deficient number, since it is larger than the sum of its proper divisors (1).

97586389652491 is an equidigital number, since it uses as much as digits as its factorization.

97586389652491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7054387200, while the sum is 82.

The spelling of 97586389652491 in words is "ninety-seven trillion, five hundred eighty-six billion, three hundred eighty-nine million, six hundred fifty-two thousand, four hundred ninety-one".