98942757649 has 2 divisors, whose sum is σ = 98942757650. Its totient is φ = 98942757648.

The previous prime is 98942757623. The next prime is 98942757673. The reversal of 98942757649 is 94675724989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90341122624 + 8601635025 = 300568^2 + 92745^2 .

It is an emirp because it is prime and its reverse (94675724989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98942757649 - 2¹³ = 98942749457 is a prime.

It is not a weakly prime, because it can be changed into another prime (98942757049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49471378824 + 49471378825.

It is an arithmetic number, because the mean of its divisors is an integer number (49471378825).

Almost surely, 2^98942757649 is an apocalyptic number.

It is an amenable number.

98942757649 is a deficient number, since it is larger than the sum of its proper divisors (1).

98942757649 is an equidigital number, since it uses as much as digits as its factorization.

98942757649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 274337280, while the sum is 70.

The spelling of 98942757649 in words is "ninety-eight billion, nine hundred forty-two million, seven hundred fifty-seven thousand, six hundred forty-nine".