21364849008 has 100 divisors (see below), whose sum is σ = 65473554960. Its totient is φ = 6702690816.

The previous prime is 21364848997. The next prime is 21364849067. The reversal of 21364849008 is 80094846312.

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 (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 462828 + ... + 506891.

Almost surely, 2^21364849008 is an apocalyptic number.

It is an amenable number.

21364849008 is an abundant number, since it is smaller than the sum of its proper divisors (44108705952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21364849008 is a wasteful number, since it uses less digits than its factorization.

21364849008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969756 (or 969741 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 21364849008 in words is "twenty-one billion, three hundred sixty-four million, eight hundred forty-nine thousand, eight".