21678065301 has 8 divisors (see below), whose sum is σ = 28957516384. Its totient is φ = 14425328880.

The previous prime is 21678065267. The next prime is 21678065323. The reversal of 21678065301 is 10356087612.

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

It is not a de Polignac number, because 21678065301 - 2¹⁹ = 21677541013 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 21678065301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21678085301) 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, 6676771 + ... + 6680016.

It is an arithmetic number, because the mean of its divisors is an integer number (3619689548).

Almost surely, 2^21678065301 is an apocalyptic number.

It is an amenable number.

21678065301 is a deficient number, since it is larger than the sum of its proper divisors (7279451083).

21678065301 is a wasteful number, since it uses less digits than its factorization.

21678065301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13357331.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 21678065301 in words is "twenty-one billion, six hundred seventy-eight million, sixty-five thousand, three hundred one".