97565217488 has 20 divisors (see below), whose sum is σ = 189061202880. Its totient is φ = 48775229664.

The previous prime is 97565217481. The next prime is 97565217509. The reversal of 97565217488 is 88471256579.

It is a self number, because there is not a number n which added to its sum of digits gives 97565217488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97565217481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351320 + ... + 564407.

It is an arithmetic number, because the mean of its divisors is an integer number (9453060144).

Almost surely, 2^97565217488 is an apocalyptic number.

It is an amenable number.

97565217488 is a deficient number, since it is larger than the sum of its proper divisors (91495985392).

97565217488 is a wasteful number, since it uses less digits than its factorization.

97565217488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922394 (or 922388 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 62.

The spelling of 97565217488 in words is "ninety-seven billion, five hundred sixty-five million, two hundred seventeen thousand, four hundred eighty-eight".