9977613117697 has 4 divisors (see below), whose sum is σ = 9989648840020. Its totient is φ = 9965577395376.

The previous prime is 9977613117653. The next prime is 9977613117733. The reversal of 9977613117697 is 7967113167799.

It is a Cunningham number, because it is equal to 3158736²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5744055848976 + 4233557268721 = 2396676^2 + 2057561^2 .

It is a cyclic number.

It is not a de Polignac number, because 9977613117697 - 2²³ = 9977604729089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9977613117607) 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, 6017859918 + ... + 6017861575.

It is an arithmetic number, because the mean of its divisors is an integer number (2497412210005).

Almost surely, 2^{9977613117697} is an apocalyptic number.

It is an amenable number.

9977613117697 is a deficient number, since it is larger than the sum of its proper divisors (12035722323).

9977613117697 is a wasteful number, since it uses less digits than its factorization.

9977613117697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12035722322.

The product of its digits is 189035532, while the sum is 73.

The spelling of 9977613117697 in words is "nine trillion, nine hundred seventy-seven billion, six hundred thirteen million, one hundred seventeen thousand, six hundred ninety-seven".