216026999999 has 4 divisors (see below), whose sum is σ = 216038193336. Its totient is φ = 216015806664.

The previous prime is 216026999977. The next prime is 216027000017. The reversal of 216026999999 is 999999620612.

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 216026999999 - 2²⁴ = 216010222783 is a prime.

It is a Duffinian number.

216026999999 is a modest number, since divided by 999999 gives 216026 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216026999939) 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, 5567669 + ... + 5606334.

It is an arithmetic number, because the mean of its divisors is an integer number (54009548334).

Almost surely, 2^216026999999 is an apocalyptic number.

216026999999 is a deficient number, since it is larger than the sum of its proper divisors (11193337).

216026999999 is a wasteful number, since it uses less digits than its factorization.

216026999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11193336.

The product of its (nonzero) digits is 76527504, while the sum is 71.

The spelling of 216026999999 in words is "two hundred sixteen billion, twenty-six million, nine hundred ninety-nine thousand, nine hundred ninety-nine".