10001000999959 has 4 divisors (see below), whose sum is σ = 10435827130416. Its totient is φ = 9566174869504.

The previous prime is 10001000999953. The next prime is 10001001000043. The reversal of 10001000999959 is 95999900010001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10001000999959 - 2⁷ = 10001000999831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001000999953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217413065194 + ... + 217413065239.

It is an arithmetic number, because the mean of its divisors is an integer number (2608956782604).

Almost surely, 2^{10001000999959} is an apocalyptic number.

10001000999959 is a deficient number, since it is larger than the sum of its proper divisors (434826130457).

10001000999959 is an equidigital number, since it uses as much as digits as its factorization.

10001000999959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434826130456.

The product of its (nonzero) digits is 295245, while the sum is 52.

The spelling of 10001000999959 in words is "ten trillion, one billion, nine hundred ninety-nine thousand, nine hundred fifty-nine".