97786468779 has 4 divisors (see below), whose sum is σ = 130381958376. Its totient is φ = 65190979184.

The previous prime is 97786468687. The next prime is 97786468847.

97786468779 is nontrivially palindromic in base 10.

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 97786468779 - 2⁷ = 97786468651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97786568779) 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, 16297744794 + ... + 16297744799.

It is an arithmetic number, because the mean of its divisors is an integer number (32595489594).

Almost surely, 2^97786468779 is an apocalyptic number.

97786468779 is a deficient number, since it is larger than the sum of its proper divisors (32595489597).

97786468779 is a wasteful number, since it uses less digits than its factorization.

97786468779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32595489596.

The product of its digits is 1792336896, while the sum is 78.

The spelling of 97786468779 in words is "ninety-seven billion, seven hundred eighty-six million, four hundred sixty-eight thousand, seven hundred seventy-nine".