999981000059 has 2 divisors, whose sum is σ = 999981000060. Its totient is φ = 999981000058.

The previous prime is 999981000037. The next prime is 999981000103. The reversal of 999981000059 is 950000189999.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999981000059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999980999971 and 999981000007.

It is not a weakly prime, because it can be changed into another prime (999981000959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499990500029 + 499990500030.

It is an arithmetic number, because the mean of its divisors is an integer number (499990500030).

Almost surely, 2^999981000059 is an apocalyptic number.

999981000059 is a deficient number, since it is larger than the sum of its proper divisors (1).

999981000059 is an equidigital number, since it uses as much as digits as its factorization.

999981000059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2361960, while the sum is 59.

The spelling of 999981000059 in words is "nine hundred ninety-nine billion, nine hundred eighty-one million, fifty-nine", and thus it is an aban number.