98168722897021 has 6 divisors (see below), whose sum is σ = 114196269492510. Its totient is φ = 84144619625976.

The previous prime is 98168722897001. The next prime is 98168722897043. The reversal of 98168722897021 is 12079822786189.

It can be written as a sum of positive squares in only one way, i.e., 53594259056100 + 44574463840921 = 7320810^2 + 6676411^2 .

It is not a de Polignac number, because 98168722897021 - 2⁹ = 98168722896509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98168722897001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1001721662166 + ... + 1001721662263.

It is an arithmetic number, because the mean of its divisors is an integer number (19032711582085).

Almost surely, 2^{98168722897021} is an apocalyptic number.

It is an amenable number.

98168722897021 is a deficient number, since it is larger than the sum of its proper divisors (16027546595489).

98168722897021 is a wasteful number, since it uses less digits than its factorization.

98168722897021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003443324443 (or 2003443324436 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 70.

The spelling of 98168722897021 in words is "ninety-eight trillion, one hundred sixty-eight billion, seven hundred twenty-two million, eight hundred ninety-seven thousand, twenty-one".