21276106799 has 8 divisors (see below), whose sum is σ = 21443619120. Its totient is φ = 21108672000.

The previous prime is 21276106717. The next prime is 21276106889. The reversal of 21276106799 is 99760167212.

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 21276106799 - 2²⁸ = 21007671343 is a prime.

It is a super-3 number, since 3×21276106799³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21276106199) 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 7 ways as a sum of consecutive naturals, for example, 612017 + ... + 645845.

It is an arithmetic number, because the mean of its divisors is an integer number (2680452390).

Almost surely, 2^21276106799 is an apocalyptic number.

21276106799 is a deficient number, since it is larger than the sum of its proper divisors (167512321).

21276106799 is a wasteful number, since it uses less digits than its factorization.

21276106799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38761.

The product of its (nonzero) digits is 571536, while the sum is 50.

The spelling of 21276106799 in words is "twenty-one billion, two hundred seventy-six million, one hundred six thousand, seven hundred ninety-nine".