215000099999 has 4 divisors (see below), whose sum is σ = 215086901064. Its totient is φ = 214913298936.

The previous prime is 215000099989. The next prime is 215000100001. The reversal of 215000099999 is 999990000512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215000099999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215000099999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215000099939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43396817 + ... + 43401770.

It is an arithmetic number, because the mean of its divisors is an integer number (53771725266).

Almost surely, 2^215000099999 is an apocalyptic number.

215000099999 is a deficient number, since it is larger than the sum of its proper divisors (86801065).

215000099999 is an equidigital number, since it uses as much as digits as its factorization.

215000099999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86801064.

The product of its (nonzero) digits is 590490, while the sum is 53.

The spelling of 215000099999 in words is "two hundred fifteen billion, ninety-nine thousand, nine hundred ninety-nine".