98657475688 has 16 divisors (see below), whose sum is σ = 185282586180. Its totient is φ = 49248786048.

The previous prime is 98657475673. The next prime is 98657475689. The reversal of 98657475688 is 88657475689.

It can be written as a sum of positive squares in 2 ways, for example, as 98647502724 + 9972964 = 314082^2 + 3158^2 .

It is a super-2 number, since 2×98657475688² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 98657475688.

It is not an unprimeable number, because it can be changed into a prime (98657475689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9988731 + ... + 9998602.

Almost surely, 2^98657475688 is an apocalyptic number.

It is an amenable number.

98657475688 is a deficient number, since it is larger than the sum of its proper divisors (86625110492).

98657475688 is a wasteful number, since it uses less digits than its factorization.

98657475688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19987956 (or 19987952 counting only the distinct ones).

The product of its digits is 812851200, while the sum is 73.

Subtracting from 98657475688 its reverse (88657475689), we obtain a palindrome (9999999999).

The spelling of 98657475688 in words is "ninety-eight billion, six hundred fifty-seven million, four hundred seventy-five thousand, six hundred eighty-eight".