6539426712 has 192 divisors, whose sum is σ = 22244040000. Its totient is φ = 1724599296.

The previous prime is 6539426711. The next prime is 6539426749. The reversal of 6539426712 is 2176249356.

6539426712 is a `hidden beast` number, since 6 + 539 + 42 + 6 + 71 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539426711) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 310864 + ... + 331232.

It is an arithmetic number, because the mean of its divisors is an integer number (115854375).

Almost surely, 2^6539426712 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 6539426712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11122020000).

6539426712 is an abundant number, since it is smaller than the sum of its proper divisors (15704613288).

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

6539426712 is a wasteful number, since it uses less digits than its factorization.

6539426712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20415 (or 20394 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 6539426712 is about 80866.7219070985. The cubic root of 6539426712 is about 1870.0213245493.

The spelling of 6539426712 in words is "six billion, five hundred thirty-nine million, four hundred twenty-six thousand, seven hundred twelve".