999998888866741 has 2 divisors, whose sum is σ = 999998888866742. Its totient is φ = 999998888866740.

The previous prime is 999998888866651. The next prime is 999998888866753. The reversal of 999998888866741 is 147668888899999.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 549909722623716 + 450089166243025 = 23450154^2 + 21215305^2 .

It is a cyclic number.

It is not a de Polignac number, because 999998888866741 - 2¹¹ = 999998888864693 is a prime.

It is a super-2 number, since 2×999998888866741² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999998888066741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999444433370 + 499999444433371.

It is an arithmetic number, because the mean of its divisors is an integer number (499999444433371).

Almost surely, 2^{999998888866741} is an apocalyptic number.

It is an amenable number.

999998888866741 is a deficient number, since it is larger than the sum of its proper divisors (1).

999998888866741 is an equidigital number, since it uses as much as digits as its factorization.

999998888866741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1950396973056, while the sum is 109.

The spelling of 999998888866741 in words is "nine hundred ninety-nine trillion, nine hundred ninety-eight billion, eight hundred eighty-eight million, eight hundred sixty-six thousand, seven hundred forty-one".