6534172736 has 126 divisors (see below), whose sum is σ = 16334007210. Its totient is φ = 2584737792.

The previous prime is 6534172703. The next prime is 6534172739. The reversal of 6534172736 is 6372714356.

It can be written as a sum of positive squares in 3 ways, for example, as 861070336 + 5673102400 = 29344^2 + 75320^2 .

It is not an unprimeable number, because it can be changed into a prime (6534172739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 523820 + ... + 536148.

Almost surely, 2^6534172736 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 6534172736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8167003605).

6534172736 is an abundant number, since it is smaller than the sum of its proper divisors (9799834474).

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

6534172736 is a wasteful number, since it uses less digits than its factorization.

6534172736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12381 (or 12351 counting only the distinct ones).

The product of its digits is 635040, while the sum is 44.

The square root of 6534172736 is about 80834.2299771576. The cubic root of 6534172736 is about 1869.5203795371.

The spelling of 6534172736 in words is "six billion, five hundred thirty-four million, one hundred seventy-two thousand, seven hundred thirty-six".