6729426336 has 144 divisors (see below), whose sum is σ = 19374997824. Its totient is φ = 2037977088.

The previous prime is 6729426317. The next prime is 6729426349. The reversal of 6729426336 is 6336249276.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1370061 + ... + 1374963.

It is an arithmetic number, because the mean of its divisors is an integer number (134548596).

Almost surely, 2^6729426336 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 6729426336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9687498912).

6729426336 is an abundant number, since it is smaller than the sum of its proper divisors (12645571488).

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

6729426336 is a wasteful number, since it uses less digits than its factorization.

6729426336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4991 (or 4954 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 48.

The square root of 6729426336 is about 82033.0807418568. The cubic root of 6729426336 is about 1887.9595324324.

The spelling of 6729426336 in words is "six billion, seven hundred twenty-nine million, four hundred twenty-six thousand, three hundred thirty-six".