98666689966920 has 48 divisors (see below), whose sum is σ = 320666742393660. Its totient is φ = 26311117324416.

The previous prime is 98666689966913. The next prime is 98666689966931. The reversal of 98666689966920 is 2966998666689.

It can be written as a sum of positive squares in 2 ways, for example, as 96439509811044 + 2227180155876 = 9820362^2 + 1492374^2 .

It is a Harshad number since it is a multiple of its sum of digits (90).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137037069039 + ... + 137037069758.

Almost surely, 2^{98666689966920} is an apocalyptic number.

98666689966920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

98666689966920 is an abundant number, since it is smaller than the sum of its proper divisors (222000052426740).

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

98666689966920 is a wasteful number, since it uses less digits than its factorization.

98666689966920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274074138814 (or 274074138807 counting only the distinct ones).

The product of its (nonzero) digits is 39182082048, while the sum is 90.

The spelling of 98666689966920 in words is "ninety-eight trillion, six hundred sixty-six billion, six hundred eighty-nine million, nine hundred sixty-six thousand, nine hundred twenty".