898987654321201 has 2 divisors, whose sum is σ = 898987654321202. Its totient is φ = 898987654321200.

The previous prime is 898987654321189. The next prime is 898987654321279. The reversal of 898987654321201 is 102123456789898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 691924878936225 + 207062775384976 = 26304465^2 + 14389676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-898987654321201 is a prime.

It is not a weakly prime, because it can be changed into another prime (898987654121201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449493827160600 + 449493827160601.

It is an arithmetic number, because the mean of its divisors is an integer number (449493827160601).

It is a 2-persistent number, because it is pandigital, and so is 2⋅898987654321201 = 1797975308642402, but 3⋅898987654321201 = 2696962962963603 is not.

Almost surely, 2^{898987654321201} is an apocalyptic number.

It is an amenable number.

898987654321201 is a deficient number, since it is larger than the sum of its proper divisors (1).

898987654321201 is an equidigital number, since it uses as much as digits as its factorization.

898987654321201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 418037760, while the sum is 73.

The spelling of 898987654321201 in words is "eight hundred ninety-eight trillion, nine hundred eighty-seven billion, six hundred fifty-four million, three hundred twenty-one thousand, two hundred one".