98561261641472 has 144 divisors (see below), whose sum is σ = 227038049085120. Its totient is φ = 41829649219584.

The previous prime is 98561261641439. The next prime is 98561261641547. The reversal of 98561261641472 is 27414616216589.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99920348 + ... + 100901924.

Almost surely, 2^{98561261641472} 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 98561261641472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113519024542560).

98561261641472 is an abundant number, since it is smaller than the sum of its proper divisors (128476787443648).

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

98561261641472 is a wasteful number, since it uses less digits than its factorization.

98561261641472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982146 (or 982132 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 62.

The spelling of 98561261641472 in words is "ninety-eight trillion, five hundred sixty-one billion, two hundred sixty-one million, six hundred forty-one thousand, four hundred seventy-two".