98440025641 has 2 divisors, whose sum is σ = 98440025642. Its totient is φ = 98440025640.

The previous prime is 98440025539. The next prime is 98440025701. The reversal of 98440025641 is 14652004489.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97793798400 + 646227241 = 312720^2 + 25421^2 .

It is a cyclic number.

It is not a de Polignac number, because 98440025641 - 2⁷ = 98440025513 is a prime.

It is not a weakly prime, because it can be changed into another prime (98440029641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49220012820 + 49220012821.

It is an arithmetic number, because the mean of its divisors is an integer number (49220012821).

Almost surely, 2^98440025641 is an apocalyptic number.

It is an amenable number.

98440025641 is a deficient number, since it is larger than the sum of its proper divisors (1).

98440025641 is an equidigital number, since it uses as much as digits as its factorization.

98440025641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 98440025641 in words is "ninety-eight billion, four hundred forty million, twenty-five thousand, six hundred forty-one".