21064048910 has 16 divisors (see below), whose sum is σ = 38029841712. Its totient is φ = 8400163200.

The previous prime is 21064048847. The next prime is 21064048921. The reversal of 21064048910 is 1984046012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3178571 + ... + 3185190.

It is an arithmetic number, because the mean of its divisors is an integer number (2376865107).

Almost surely, 2^21064048910 is an apocalyptic number.

21064048910 is a deficient number, since it is larger than the sum of its proper divisors (16965792802).

21064048910 is a wasteful number, since it uses less digits than its factorization.

21064048910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6364099.

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 21064048910 in words is "twenty-one billion, sixty-four million, forty-eight thousand, nine hundred ten".