6444135260 has 48 divisors (see below), whose sum is σ = 14467916736. Its totient is φ = 2402460672.

The previous prime is 6444135233. The next prime is 6444135283. The reversal of 6444135260 is 625314446.

It is a self number, because there is not a number n which added to its sum of digits gives 6444135260.

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, 56987 + ... + 127026.

It is an arithmetic number, because the mean of its divisors is an integer number (301414932).

Almost surely, 2^6444135260 is an apocalyptic number.

It is an amenable number.

6444135260 is an abundant number, since it is smaller than the sum of its proper divisors (8023781476).

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

6444135260 is a wasteful number, since it uses less digits than its factorization.

6444135260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184142 (or 184140 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 6444135260 is about 80275.3714410591. The cubic root of 6444135260 is about 1860.8936296339.

The spelling of 6444135260 in words is "six billion, four hundred forty-four million, one hundred thirty-five thousand, two hundred sixty".