21468801486 has 64 divisors (see below), whose sum is σ = 48320167680. Its totient is φ = 6301820160.

The previous prime is 21468801439. The next prime is 21468801527. The reversal of 21468801486 is 68410886412.

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 (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 534970 + ... + 573698.

It is an arithmetic number, because the mean of its divisors is an integer number (755002620).

Almost surely, 2^21468801486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21468801486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24160083840).

21468801486 is an abundant number, since it is smaller than the sum of its proper divisors (26851366194).

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

21468801486 is a wasteful number, since it uses less digits than its factorization.

21468801486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39009.

The product of its (nonzero) digits is 589824, while the sum is 48.

The spelling of 21468801486 in words is "twenty-one billion, four hundred sixty-eight million, eight hundred one thousand, four hundred eighty-six".