98636666858 has 16 divisors (see below), whose sum is σ = 159614054280. Its totient is φ = 45541456896.

The previous prime is 98636666833. The next prime is 98636666969. The reversal of 98636666858 is 85866663689.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 74143477849 + 24493189009 = 272293^2 + 156503^2 .

It is a junction number, because it is equal to n+sod(n) for n = 98636666791 and 98636666800.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27366863 + ... + 27370466.

Almost surely, 2^98636666858 is an apocalyptic number.

98636666858 is a deficient number, since it is larger than the sum of its proper divisors (60977387422).

98636666858 is a wasteful number, since it uses less digits than its factorization.

98636666858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54737401.

The product of its digits is 537477120, while the sum is 71.

The spelling of 98636666858 in words is "ninety-eight billion, six hundred thirty-six million, six hundred sixty-six thousand, eight hundred fifty-eight".