97985658979 has 32 divisors (see below), whose sum is σ = 110882580480. Its totient is φ = 85962124800.

The previous prime is 97985658977. The next prime is 97985659003.

97985658979 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 97985658979 - 2¹ = 97985658977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97985658971) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45341659 + ... + 45343819.

It is an arithmetic number, because the mean of its divisors is an integer number (3465080640).

Almost surely, 2^97985658979 is an apocalyptic number.

97985658979 is a deficient number, since it is larger than the sum of its proper divisors (12896921501).

97985658979 is a wasteful number, since it uses less digits than its factorization.

97985658979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171.

The product of its digits is 3086294400, while the sum is 82.

The spelling of 97985658979 in words is "ninety-seven billion, nine hundred eighty-five million, six hundred fifty-eight thousand, nine hundred seventy-nine".