21064364102 has 8 divisors (see below), whose sum is σ = 31636192896. Its totient is φ = 10518966472.

The previous prime is 21064364081. The next prime is 21064364147. The reversal of 21064364102 is 20146346012.

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, 6605798 + ... + 6608985.

It is an arithmetic number, because the mean of its divisors is an integer number (3954524112).

Almost surely, 2^21064364102 is an apocalyptic number.

21064364102 is a deficient number, since it is larger than the sum of its proper divisors (10571828794).

21064364102 is a wasteful number, since it uses less digits than its factorization.

21064364102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13215582.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 21064364102 in words is "twenty-one billion, sixty-four million, three hundred sixty-four thousand, one hundred two".