97702020779 has 8 divisors (see below), whose sum is σ = 106613912640. Its totient is φ = 88795110600.

The previous prime is 97702020749. The next prime is 97702020803.

97702020779 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 97702020779 - 2²⁰ = 97700972203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97702020749) 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, 1204349 + ... + 1282910.

It is an arithmetic number, because the mean of its divisors is an integer number (13326739080).

Almost surely, 2^97702020779 is an apocalyptic number.

97702020779 is a deficient number, since it is larger than the sum of its proper divisors (8911891861).

97702020779 is a wasteful number, since it uses less digits than its factorization.

97702020779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490841.

The product of its (nonzero) digits is 777924, while the sum is 50.

It can be divided in two parts, 977020 and 20779, that added together give a palindrome (997799).

The spelling of 97702020779 in words is "ninety-seven billion, seven hundred two million, twenty thousand, seven hundred seventy-nine".