98396336821 has 16 divisors (see below), whose sum is σ = 106179822000. Its totient is φ = 90835550208.

The previous prime is 98396336813. The next prime is 98396336839. The reversal of 98396336821 is 12863369389.

It can be written as a sum of positive squares in 8 ways, for example, as 326524900 + 98069811921 = 18070^2 + 313161^2 .

It is a cyclic number.

It is not a de Polignac number, because 98396336821 - 2³ = 98396336813 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 (98396336861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3707005 + ... + 3733453.

It is an arithmetic number, because the mean of its divisors is an integer number (6636238875).

Almost surely, 2^98396336821 is an apocalyptic number.

It is an amenable number.

98396336821 is a deficient number, since it is larger than the sum of its proper divisors (7783485179).

98396336821 is a wasteful number, since it uses less digits than its factorization.

98396336821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30648.

The product of its digits is 10077696, while the sum is 58.

The spelling of 98396336821 in words is "ninety-eight billion, three hundred ninety-six million, three hundred thirty-six thousand, eight hundred twenty-one".