7797664667977 has 8 divisors (see below), whose sum is σ = 7819881914016. Its totient is φ = 7775448143232.

The previous prime is 7797664667957. The next prime is 7797664667981.

7797664667977 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7797664667977 - 2¹¹ = 7797664665929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7797664667957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27515518 + ... + 27797464.

It is an arithmetic number, because the mean of its divisors is an integer number (977485239252).

Almost surely, 2^{7797664667977} is an apocalyptic number.

It is an amenable number.

7797664667977 is a deficient number, since it is larger than the sum of its proper divisors (22217246039).

7797664667977 is a wasteful number, since it uses less digits than its factorization.

7797664667977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360647.

The product of its digits is 49401285696, while the sum is 88.

The spelling of 7797664667977 in words is "seven trillion, seven hundred ninety-seven billion, six hundred sixty-four million, six hundred sixty-seven thousand, nine hundred seventy-seven".