20099999999999 has 8 divisors (see below), whose sum is σ = 20721391959408. Its totient is φ = 19484853186240.

The previous prime is 20099999999987. The next prime is 20100000000011. The reversal of 20099999999999 is 99999999999002.

It is an interprime number because it is at equal distance from previous prime (20099999999987) and next prime (20100000000011).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20099999999999 - 2¹² = 20099999995903 is a prime.

It is a super-9 number, since 9×20099999999999⁹ (a number of 121 digits) contains 999999999 as substring.

20099999999999 is a modest number, since divided by 9999999 gives 2009999 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 20099999999899 and 20099999999908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20099993999999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561279877 + ... + 1561292750.

It is an arithmetic number, because the mean of its divisors is an integer number (2590173994926).

Almost surely, 2^{20099999999999} is an apocalyptic number.

20099999999999 is a deficient number, since it is larger than the sum of its proper divisors (621391959409).

20099999999999 is a wasteful number, since it uses less digits than its factorization.

20099999999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122572825.

The product of its (nonzero) digits is 62762119218, while the sum is 101.

The spelling of 20099999999999 in words is "twenty trillion, ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".