21679324386 has 8 divisors (see below), whose sum is σ = 43358648784. Its totient is φ = 7226441460.

The previous prime is 21679324363. The next prime is 21679324391. The reversal of 21679324386 is 68342397612.

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

21679324386 is an admirable 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, 1806610360 + ... + 1806610371.

It is an arithmetic number, because the mean of its divisors is an integer number (5419831098).

Almost surely, 2^21679324386 is an apocalyptic number.

21679324386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21679324386 is a wasteful number, since it uses less digits than its factorization.

21679324386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613220736.

The product of its digits is 2612736, while the sum is 51.

The spelling of 21679324386 in words is "twenty-one billion, six hundred seventy-nine million, three hundred twenty-four thousand, three hundred eighty-six".