97998982218 has 20 divisors (see below), whose sum is σ = 219590312370. Its totient is φ = 32666327352.

The previous prime is 97998982201. The next prime is 97998982219. The reversal of 97998982218 is 81228989979.

It can be written as a sum of positive squares in only one way, i.e., 97998424209 + 558009 = 313047^2 + 747^2 .

It is not an unprimeable number, because it can be changed into a prime (97998982219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 302465833 + ... + 302466156.

Almost surely, 2^97998982218 is an apocalyptic number.

97998982218 is an abundant number, since it is smaller than the sum of its proper divisors (121591330152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97998982218 is a wasteful number, since it uses less digits than its factorization.

97998982218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604932003 (or 604931994 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 72.

The spelling of 97998982218 in words is "ninety-seven billion, nine hundred ninety-eight million, nine hundred eighty-two thousand, two hundred eighteen".