6671439936 has 280 divisors, whose sum is σ = 22764796736. Its totient is φ = 1892367360.

The previous prime is 6671439917. The next prime is 6671439947. The reversal of 6671439936 is 6399341766.

It is a super-2 number, since 2×6671439936² = 89016221639311368192, which contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5696631 + ... + 5697801.

Almost surely, 2^6671439936 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 6671439936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11382398368).

6671439936 is an abundant number, since it is smaller than the sum of its proper divisors (16093356800).

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

6671439936 is a wasteful number, since it uses less digits than its factorization.

6671439936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359 (or 1340 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 54.

The square root of 6671439936 is about 81678.8830481906. The cubic root of 6671439936 is about 1882.5211324432.

The spelling of 6671439936 in words is "six billion, six hundred seventy-one million, four hundred thirty-nine thousand, nine hundred thirty-six".