98732771872 has 144 divisors (see below), whose sum is σ = 229506526872. Its totient is φ = 41684213760.

The previous prime is 98732771869. The next prime is 98732771881. The reversal of 98732771872 is 27817723789.

It can be written as a sum of positive squares in 4 ways, for example, as 88040384656 + 10692387216 = 296716^2 + 103404^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 98732771872.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 30651222 + ... + 30654442.

Almost surely, 2^98732771872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98732771872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114753263436).

98732771872 is an abundant number, since it is smaller than the sum of its proper divisors (130773755000).

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

98732771872 is a wasteful number, since it uses less digits than its factorization.

98732771872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531 (or 3516 counting only the distinct ones).

The product of its digits is 16595712, while the sum is 61.

The spelling of 98732771872 in words is "ninety-eight billion, seven hundred thirty-two million, seven hundred seventy-one thousand, eight hundred seventy-two".