6243921804672 has 128 divisors (see below), whose sum is σ = 18453389772000. Its totient is φ = 2078466988032.

The previous prime is 6243921804641. The next prime is 6243921804689. The reversal of 6243921804672 is 2764081293426.

It is a happy number.

6243921804672 is a `hidden beast` number, since 6 + 2 + 4 + 392 + 180 + 4 + 6 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

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 15 ways as a sum of consecutive naturals, for example, 1300854 + ... + 3765642.

Almost surely, 2^{6243921804672} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6243921804672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9226694886000).

6243921804672 is an abundant number, since it is smaller than the sum of its proper divisors (12209467967328).

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

6243921804672 is a wasteful number, since it uses less digits than its factorization.

6243921804672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465545 (or 2465527 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 6243921804672 in words is "six trillion, two hundred forty-three billion, nine hundred twenty-one million, eight hundred four thousand, six hundred seventy-two".