21167623213 has 8 divisors (see below), whose sum is σ = 23655171456. Its totient is φ = 18773944800.

The previous prime is 21167623199. The next prime is 21167623229. The reversal of 21167623213 is 31232676112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21167623213 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 (21167623283) 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, 23466981 + ... + 23467882.

It is an arithmetic number, because the mean of its divisors is an integer number (2956896432).

Almost surely, 2^21167623213 is an apocalyptic number.

It is an amenable number.

21167623213 is a deficient number, since it is larger than the sum of its proper divisors (2487548243).

21167623213 is a wasteful number, since it uses less digits than its factorization.

21167623213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46934915.

The product of its digits is 18144, while the sum is 34.

The spelling of 21167623213 in words is "twenty-one billion, one hundred sixty-seven million, six hundred twenty-three thousand, two hundred thirteen".