6340516452 has 72 divisors (see below), whose sum is σ = 16986145176. Its totient is φ = 1987313664.

The previous prime is 6340516447. The next prime is 6340516489. The reversal of 6340516452 is 2546150436.

6340516452 is a `hidden beast` number, since 6 + 3 + 4 + 0 + 5 + 1 + 645 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3094251876 + 3246264576 = 55626^2 + 56976^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 740548 + ... + 749060.

It is an arithmetic number, because the mean of its divisors is an integer number (235918683).

Almost surely, 2^6340516452 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 6340516452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8493072588).

6340516452 is an abundant number, since it is smaller than the sum of its proper divisors (10645628724).

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

6340516452 is a wasteful number, since it uses less digits than its factorization.

6340516452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9757 (or 9752 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 6340516452 is about 79627.3599461893. The cubic root of 6340516452 is about 1850.8655751817.

Adding to 6340516452 its reverse (2546150436), we get a palindrome (8886666888).

The spelling of 6340516452 in words is "six billion, three hundred forty million, five hundred sixteen thousand, four hundred fifty-two".