21064673254046 has 16 divisors (see below), whose sum is σ = 31892676464880. Its totient is φ = 10433783367360.

The previous prime is 21064673254013. The next prime is 21064673254081. The reversal of 21064673254046 is 64045237646012.

It is a junction number, because it is equal to n+sod(n) for n = 21064673253985 and 21064673254003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19748066 + ... + 20787386.

It is an arithmetic number, because the mean of its divisors is an integer number (1993292279055).

Almost surely, 2^{21064673254046} is an apocalyptic number.

21064673254046 is a deficient number, since it is larger than the sum of its proper divisors (10828003210834).

21064673254046 is a wasteful number, since it uses less digits than its factorization.

21064673254046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134139.

The product of its (nonzero) digits is 5806080, while the sum is 50.

The spelling of 21064673254046 in words is "twenty-one trillion, sixty-four billion, six hundred seventy-three million, two hundred fifty-four thousand, forty-six".