97767876779 has 8 divisors (see below), whose sum is σ = 101450587392. Its totient is φ = 94149213480.

The previous prime is 97767876757. The next prime is 97767876847.

97767876779 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 a de Polignac number, because none of the positive numbers 2^k-97767876779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97767876709) 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, 16008719 + ... + 16014824.

It is an arithmetic number, because the mean of its divisors is an integer number (12681323424).

Almost surely, 2^97767876779 is an apocalyptic number.

97767876779 is a deficient number, since it is larger than the sum of its proper divisors (3682710613).

97767876779 is a wasteful number, since it uses less digits than its factorization.

97767876779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32023657.

The product of its digits is 2744515872, while the sum is 80.

The spelling of 97767876779 in words is "ninety-seven billion, seven hundred sixty-seven million, eight hundred seventy-six thousand, seven hundred seventy-nine".