21343158607680 has 2240 divisors, whose sum is σ = 96275859068928. Its totient is φ = 4368076554240.

The previous prime is 21343158607657. The next prime is 21343158607699. The reversal of 21343158607680 is 8670685134312.

21343158607680 is a `hidden beast` number, since 2 + 1 + 3 + 431 + 5 + 8 + 60 + 76 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (2240).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 16532267835 + ... + 16532269125.

Almost surely, 2^{21343158607680} is an apocalyptic number.

21343158607680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21343158607680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48137929534464).

21343158607680 is an abundant number, since it is smaller than the sum of its proper divisors (74932700461248).

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

21343158607680 is a wasteful number, since it uses less digits than its factorization.

21343158607680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 21343158607680 in words is "twenty-one trillion, three hundred forty-three billion, one hundred fifty-eight million, six hundred seven thousand, six hundred eighty".