6443477140 has 24 divisors (see below), whose sum is σ = 14119620480. Its totient is φ = 2465330208.

The previous prime is 6443477093. The next prime is 6443477149. The reversal of 6443477140 is 417743446.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6443477093 and 6443477102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6443477149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7003320 + ... + 7004239.

It is an arithmetic number, because the mean of its divisors is an integer number (588317520).

Almost surely, 2^6443477140 is an apocalyptic number.

It is an amenable number.

6443477140 is an abundant number, since it is smaller than the sum of its proper divisors (7676143340).

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

6443477140 is a wasteful number, since it uses less digits than its factorization.

6443477140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14007591 (or 14007589 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 40.

The square root of 6443477140 is about 80271.2721962222. The cubic root of 6443477140 is about 1860.8302783354.

The spelling of 6443477140 in words is "six billion, four hundred forty-three million, four hundred seventy-seven thousand, one hundred forty".