98937240821 has 2 divisors, whose sum is σ = 98937240822. Its totient is φ = 98937240820.

The previous prime is 98937240793. The next prime is 98937240827. The reversal of 98937240821 is 12804273989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51478618321 + 47458622500 = 226889^2 + 217850^2 .

It is a cyclic number.

It is not a de Polignac number, because 98937240821 - 2⁶ = 98937240757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98937240827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49468620410 + 49468620411.

It is an arithmetic number, because the mean of its divisors is an integer number (49468620411).

Almost surely, 2^98937240821 is an apocalyptic number.

It is an amenable number.

98937240821 is a deficient number, since it is larger than the sum of its proper divisors (1).

98937240821 is an equidigital number, since it uses as much as digits as its factorization.

98937240821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 98937240821 in words is "ninety-eight billion, nine hundred thirty-seven million, two hundred forty thousand, eight hundred twenty-one".