6539592672 has 144 divisors (see below), whose sum is σ = 20301240960. Its totient is φ = 2065087872.

The previous prime is 6539592671. The next prime is 6539592769. The reversal of 6539592672 is 2762959356.

It is a tau number, because it is divible by the number of its divisors (144).

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539592671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125613 + ... + 169875.

It is an arithmetic number, because the mean of its divisors is an integer number (140980840).

Almost surely, 2^6539592672 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 6539592672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10150620480).

6539592672 is an abundant number, since it is smaller than the sum of its proper divisors (13761648288).

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

6539592672 is a wasteful number, since it uses less digits than its factorization.

6539592672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44307 (or 44287 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 54.

The square root of 6539592672 is about 80867.7480334404. The cubic root of 6539592672 is about 1870.0371437807.

The spelling of 6539592672 in words is "six billion, five hundred thirty-nine million, five hundred ninety-two thousand, six hundred seventy-two".