9797657923727 has 4 divisors (see below), whose sum is σ = 9982519394040. Its totient is φ = 9612796453416.

The previous prime is 9797657923693. The next prime is 9797657923751. The reversal of 9797657923727 is 7273297567979.

It is a happy number.

9797657923727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9797657923727 - 2³² = 9793362956431 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 (9797657943727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92430735077 + ... + 92430735182.

It is an arithmetic number, because the mean of its divisors is an integer number (2495629848510).

Almost surely, 2^{9797657923727} is an apocalyptic number.

9797657923727 is a deficient number, since it is larger than the sum of its proper divisors (184861470313).

9797657923727 is a wasteful number, since it uses less digits than its factorization.

9797657923727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184861470312.

The product of its digits is 4410829080, while the sum is 80.

The spelling of 9797657923727 in words is "nine trillion, seven hundred ninety-seven billion, six hundred fifty-seven million, nine hundred twenty-three thousand, seven hundred twenty-seven".