98861041666321 has 9 divisors (see below), whose sum is σ = 108665562711433. Its totient is φ = 89873574813220.

The previous prime is 98861041666319. The next prime is 98861041666333. The reversal of 98861041666321 is 12366614016889.

The square root of 98861041666321 is 9942889.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 98861041666321 - 2¹ = 98861041666319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 98861041666321.

It is not an unprimeable number, because it can be changed into a prime (98861041666391) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 108919830 + ... + 109823728.

Almost surely, 2^{98861041666321} is an apocalyptic number.

98861041666321 is the 9942889-th square number.

98861041666321 is the 4971445-th centered octagonal number.

It is an amenable number.

98861041666321 is a deficient number, since it is larger than the sum of its proper divisors (9804521045112).

98861041666321 is an frugal number, since it uses more digits than its factorization.

98861041666321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807820 (or 903910 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 61.

The spelling of 98861041666321 in words is "ninety-eight trillion, eight hundred sixty-one billion, forty-one million, six hundred sixty-six thousand, three hundred twenty-one".