98562808621 has 2 divisors, whose sum is σ = 98562808622. Its totient is φ = 98562808620.

The previous prime is 98562808601. The next prime is 98562808639. The reversal of 98562808621 is 12680826589.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89383060900 + 9179747721 = 298970^2 + 95811^2 .

It is an emirp because it is prime and its reverse (12680826589) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98562808621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98562808601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49281404310 + 49281404311.

It is an arithmetic number, because the mean of its divisors is an integer number (49281404311).

Almost surely, 2^98562808621 is an apocalyptic number.

It is an amenable number.

98562808621 is a deficient number, since it is larger than the sum of its proper divisors (1).

98562808621 is an equidigital number, since it uses as much as digits as its factorization.

98562808621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 98562808621 in words is "ninety-eight billion, five hundred sixty-two million, eight hundred eight thousand, six hundred twenty-one".