898987654321279 has 2 divisors, whose sum is σ = 898987654321280. Its totient is φ = 898987654321278.

The previous prime is 898987654321201. The next prime is 898987654321283. The reversal of 898987654321279 is 972123456789898.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-898987654321279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 898987654321279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898987954321279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449493827160639 + 449493827160640.

It is an arithmetic number, because the mean of its divisors is an integer number (449493827160640).

Almost surely, 2^{898987654321279} is an apocalyptic number.

898987654321279 is a deficient number, since it is larger than the sum of its proper divisors (1).

898987654321279 is an equidigital number, since it uses as much as digits as its factorization.

898987654321279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26336378880, while the sum is 88.

The spelling of 898987654321279 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 seventy-nine".