98368689421 has 2 divisors, whose sum is σ = 98368689422. Its totient is φ = 98368689420.

The previous prime is 98368689403. The next prime is 98368689431. The reversal of 98368689421 is 12498686389.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76460545225 + 21908144196 = 276515^2 + 148014^2 .

It is a cyclic number.

It is not a de Polignac number, because 98368689421 - 2²⁷ = 98234471693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98368689431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49184344710 + 49184344711.

It is an arithmetic number, because the mean of its divisors is an integer number (49184344711).

Almost surely, 2^98368689421 is an apocalyptic number.

It is an amenable number.

98368689421 is a deficient number, since it is larger than the sum of its proper divisors (1).

98368689421 is an equidigital number, since it uses as much as digits as its factorization.

98368689421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35831808, while the sum is 64.

The spelling of 98368689421 in words is "ninety-eight billion, three hundred sixty-eight million, six hundred eighty-nine thousand, four hundred twenty-one".