98561261641471 has 4 divisors (see below), whose sum is σ = 98581096877200. Its totient is φ = 98541426405744.

The previous prime is 98561261641439. The next prime is 98561261641547. The reversal of 98561261641471 is 17414616216589.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 98561261641471 - 2⁵ = 98561261641439 is a prime.

It is a super-3 number, since 3×98561261641471³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98561261648471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9917610411 + ... + 9917620348.

It is an arithmetic number, because the mean of its divisors is an integer number (24645274219300).

Almost surely, 2^{98561261641471} is an apocalyptic number.

98561261641471 is a deficient number, since it is larger than the sum of its proper divisors (19835235729).

98561261641471 is a wasteful number, since it uses less digits than its factorization.

98561261641471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19835235728.

The product of its digits is 17418240, while the sum is 61.

The spelling of 98561261641471 in words is "ninety-eight trillion, five hundred sixty-one billion, two hundred sixty-one million, six hundred forty-one thousand, four hundred seventy-one".