97645409387 has 12 divisors (see below), whose sum is σ = 108837056520. Its totient is φ = 87059630016.

The previous prime is 97645409377. The next prime is 97645409413. The reversal of 97645409387 is 78390454679.

It is not a de Polignac number, because 97645409387 - 2²⁰ = 97644360811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97645409327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5607308 + ... + 5624694.

It is an arithmetic number, because the mean of its divisors is an integer number (9069754710).

Almost surely, 2^97645409387 is an apocalyptic number.

97645409387 is a deficient number, since it is larger than the sum of its proper divisors (11191647133).

97645409387 is an frugal number, since it uses more digits than its factorization.

97645409387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34810 (or 17423 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 62.

The spelling of 97645409387 in words is "ninety-seven billion, six hundred forty-five million, four hundred nine thousand, three hundred eighty-seven".