98561261648471 has 2 divisors, whose sum is σ = 98561261648472. Its totient is φ = 98561261648470.

The previous prime is 98561261648449. The next prime is 98561261648477. The reversal of 98561261648471 is 17484616216589.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 98561261648471 - 2¹⁴ = 98561261632087 is a prime.

It is a super-3 number, since 3×98561261648471³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98561261648477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49280630824235 + 49280630824236.

It is an arithmetic number, because the mean of its divisors is an integer number (49280630824236).

Almost surely, 2^{98561261648471} is an apocalyptic number.

98561261648471 is a deficient number, since it is larger than the sum of its proper divisors (1).

98561261648471 is an equidigital number, since it uses as much as digits as its factorization.

98561261648471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139345920, while the sum is 68.

The spelling of 98561261648471 in words is "ninety-eight trillion, five hundred sixty-one billion, two hundred sixty-one million, six hundred forty-eight thousand, four hundred seventy-one".