21445896710 has 64 divisors (see below), whose sum is σ = 45363120768. Its totient is φ = 7145708544.

The previous prime is 21445896709. The next prime is 21445896721. The reversal of 21445896710 is 1769854412.

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 31 ways as a sum of consecutive naturals, for example, 2422412 + ... + 2431248.

It is an arithmetic number, because the mean of its divisors is an integer number (708798762).

Almost surely, 2^21445896710 is an apocalyptic number.

21445896710 is an abundant number, since it is smaller than the sum of its proper divisors (23917224058).

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

21445896710 is a wasteful number, since it uses less digits than its factorization.

21445896710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9825.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 21445896710 in words is "twenty-one billion, four hundred forty-five million, eight hundred ninety-six thousand, seven hundred ten".