999959651288993 has 2 divisors, whose sum is σ = 999959651288994. Its totient is φ = 999959651288992.

The previous prime is 999959651288989. The next prime is 999959651289059. The reversal of 999959651288993 is 399882156959999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 928785844576144 + 71173806712849 = 30475988^2 + 8436457^2 .

It is a cyclic number.

It is not a de Polignac number, because 999959651288993 - 2² = 999959651288989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999959651288893 and 999959651288902.

It is not a weakly prime, because it can be changed into another prime (999959651288903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499979825644496 + 499979825644497.

It is an arithmetic number, because the mean of its divisors is an integer number (499979825644497).

Almost surely, 2^{999959651288993} is an apocalyptic number.

It is an amenable number.

999959651288993 is a deficient number, since it is larger than the sum of its proper divisors (1).

999959651288993 is an equidigital number, since it uses as much as digits as its factorization.

999959651288993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 275499014400, while the sum is 101.

The spelling of 999959651288993 in words is "nine hundred ninety-nine trillion, nine hundred fifty-nine billion, six hundred fifty-one million, two hundred eighty-eight thousand, nine hundred ninety-three".