21632366634064 has 20 divisors (see below), whose sum is σ = 42538273196704. Its totient is φ = 10654747744608.

The previous prime is 21632366634037. The next prime is 21632366634071. The reversal of 21632366634064 is 46043666323612.

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, 10089722172 + ... + 10089724315.

Almost surely, 2^{21632366634064} is an apocalyptic number.

It is an amenable number.

21632366634064 is a deficient number, since it is larger than the sum of its proper divisors (20905906562640).

21632366634064 is a wasteful number, since it uses less digits than its factorization.

21632366634064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20179446562 (or 20179446556 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 52.

The spelling of 21632366634064 in words is "twenty-one trillion, six hundred thirty-two billion, three hundred sixty-six million, six hundred thirty-four thousand, sixty-four".