97501605917 has 2 divisors, whose sum is σ = 97501605918. Its totient is φ = 97501605916.

The previous prime is 97501605913. The next prime is 97501605923. The reversal of 97501605917 is 71950610579.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68231186521 + 29270419396 = 261211^2 + 171086^2 .

It is a cyclic number.

It is not a de Polignac number, because 97501605917 - 2² = 97501605913 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97501605913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48750802958 + 48750802959.

It is an arithmetic number, because the mean of its divisors is an integer number (48750802959).

Almost surely, 2^97501605917 is an apocalyptic number.

It is an amenable number.

97501605917 is a deficient number, since it is larger than the sum of its proper divisors (1).

97501605917 is an equidigital number, since it uses as much as digits as its factorization.

97501605917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 595350, while the sum is 50.

The spelling of 97501605917 in words is "ninety-seven billion, five hundred one million, six hundred five thousand, nine hundred seventeen".