898987954321279 has 2 divisors, whose sum is σ = 898987954321280. Its totient is φ = 898987954321278.

The previous prime is 898987954321211. The next prime is 898987954321313. The reversal of 898987954321279 is 972123459789898.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-898987954321279 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 898987954321193 and 898987954321202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898987954321879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449493977160639 + 449493977160640.

It is an arithmetic number, because the mean of its divisors is an integer number (449493977160640).

Almost surely, 2^{898987954321279} is an apocalyptic number.

898987954321279 is a deficient number, since it is larger than the sum of its proper divisors (1).

898987954321279 is an equidigital number, since it uses as much as digits as its factorization.

898987954321279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39504568320, while the sum is 91.

The spelling of 898987954321279 in words is "eight hundred ninety-eight trillion, nine hundred eighty-seven billion, nine hundred fifty-four million, three hundred twenty-one thousand, two hundred seventy-nine".