97665851023 has 32 divisors (see below), whose sum is σ = 110096408576. Its totient is φ = 86055032448.

The previous prime is 97665851011. The next prime is 97665851033. The reversal of 97665851023 is 32015856679.

It is a cyclic number.

It is not a de Polignac number, because 97665851023 - 2¹³ = 97665842831 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 (97665851033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4746265 + ... + 4766797.

It is an arithmetic number, because the mean of its divisors is an integer number (3440512768).

Almost surely, 2^97665851023 is an apocalyptic number.

97665851023 is a deficient number, since it is larger than the sum of its proper divisors (12430557553).

97665851023 is a wasteful number, since it uses less digits than its factorization.

97665851023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20783.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 97665851023 in words is "ninety-seven billion, six hundred sixty-five million, eight hundred fifty-one thousand, twenty-three".