97645065723 has 12 divisors (see below), whose sum is σ = 141063138528. Its totient is φ = 65087357040.

The previous prime is 97645065691. The next prime is 97645065767. The reversal of 97645065723 is 32756054679.

97645065723 is a `hidden beast` number, since 9 + 7 + 64 + 5 + 0 + 6 + 572 + 3 = 666.

It is not a de Polignac number, because 97645065723 - 2⁵ = 97645065691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97645065723.

It is not an unprimeable number, because it can be changed into a prime (97645065773) 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 11 ways as a sum of consecutive naturals, for example, 713040 + ... + 838877.

It is an arithmetic number, because the mean of its divisors is an integer number (11755261544).

Almost surely, 2^97645065723 is an apocalyptic number.

97645065723 is a deficient number, since it is larger than the sum of its proper divisors (43418072805).

97645065723 is a wasteful number, since it uses less digits than its factorization.

97645065723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558914 (or 1558911 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 54.

The spelling of 97645065723 in words is "ninety-seven billion, six hundred forty-five million, sixty-five thousand, seven hundred twenty-three".