6509499084 has 72 divisors (see below), whose sum is σ = 17968942992. Its totient is φ = 1970542080.

The previous prime is 6509499079. The next prime is 6509499089. The reversal of 6509499084 is 4809949056.

6509499084 is a `hidden beast` number, since 6 + 509 + 49 + 90 + 8 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (6509499079) and next prime (6509499089).

It is a self number, because there is not a number n which added to its sum of digits gives 6509499084.

It is not an unprimeable number, because it can be changed into a prime (6509499089) 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, 401112 + ... + 417024.

Almost surely, 2^6509499084 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 6509499084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8984471496).

6509499084 is an abundant number, since it is smaller than the sum of its proper divisors (11459443908).

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

6509499084 is a wasteful number, since it uses less digits than its factorization.

6509499084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16967 (or 16962 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 6509499084 is about 80681.4667938059. The cubic root of 6509499084 is about 1867.1642496784.

The spelling of 6509499084 in words is "six billion, five hundred nine million, four hundred ninety-nine thousand, eighty-four".