21070853366 has 8 divisors (see below), whose sum is σ = 31607001840. Its totient is φ = 10535186088.

The previous prime is 21070853359. The next prime is 21070853467. The reversal of 21070853366 is 66335807012.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23600 + ... + 206636.

It is an arithmetic number, because the mean of its divisors is an integer number (3950875230).

Almost surely, 2^21070853366 is an apocalyptic number.

21070853366 is a deficient number, since it is larger than the sum of its proper divisors (10536148474).

21070853366 is a wasteful number, since it uses less digits than its factorization.

21070853366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240598.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 21070853366 in words is "twenty-one billion, seventy million, eight hundred fifty-three thousand, three hundred sixty-six".