21067670014 has 8 divisors (see below), whose sum is σ = 31605265368. Its totient is φ = 10532581560.

The previous prime is 21067670009. The next prime is 21067670023. The reversal of 21067670014 is 41007676012.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605572 + ... + 639415.

It is an arithmetic number, because the mean of its divisors is an integer number (3950658171).

Almost surely, 2^21067670014 is an apocalyptic number.

21067670014 is a deficient number, since it is larger than the sum of its proper divisors (10537595354).

21067670014 is a wasteful number, since it uses less digits than its factorization.

21067670014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253450.

The product of its (nonzero) digits is 14112, while the sum is 34.

The spelling of 21067670014 in words is "twenty-one billion, sixty-seven million, six hundred seventy thousand, fourteen".