9797657923729 has 6 divisors (see below), whose sum is σ = 10609298225286. Its totient is φ = 9043991929440.

The previous prime is 9797657923693. The next prime is 9797657923751. The reversal of 9797657923729 is 9273297567979.

It can be written as a sum of positive squares in 3 ways, for example, as 284011187329 + 9513646736400 = 532927^2 + 3084420^2 .

It is not a de Polignac number, because 9797657923729 - 2¹⁹ = 9797657399441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9797657926729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28987153452 + ... + 28987153789.

It is an arithmetic number, because the mean of its divisors is an integer number (1768216370881).

Almost surely, 2^{9797657923729} is an apocalyptic number.

It is an amenable number.

9797657923729 is a deficient number, since it is larger than the sum of its proper divisors (811640301557).

9797657923729 is a wasteful number, since it uses less digits than its factorization.

9797657923729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57974307267 (or 57974307254 counting only the distinct ones).

The product of its digits is 5671065960, while the sum is 82.

The spelling of 9797657923729 in words is "nine trillion, seven hundred ninety-seven billion, six hundred fifty-seven million, nine hundred twenty-three thousand, seven hundred twenty-nine".