97648859509 has 2 divisors, whose sum is σ = 97648859510. Its totient is φ = 97648859508.

The previous prime is 97648859461. The next prime is 97648859513. The reversal of 97648859509 is 90595884679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92353386609 + 5295472900 = 303897^2 + 72770^2 .

It is a cyclic number.

It is not a de Polignac number, because 97648859509 - 2⁹ = 97648858997 is a prime.

It is a super-3 number, since 3×97648859509³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97648859569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48824429754 + 48824429755.

It is an arithmetic number, because the mean of its divisors is an integer number (48824429755).

Almost surely, 2^97648859509 is an apocalyptic number.

It is an amenable number.

97648859509 is a deficient number, since it is larger than the sum of its proper divisors (1).

97648859509 is an equidigital number, since it uses as much as digits as its factorization.

97648859509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 195955200, while the sum is 70.

The spelling of 97648859509 in words is "ninety-seven billion, six hundred forty-eight million, eight hundred fifty-nine thousand, five hundred nine".