6549199500 has 192 divisors, whose sum is σ = 19859374080. Its totient is φ = 1675296000.

The previous prime is 6549199487. The next prime is 6549199513. The reversal of 6549199500 is 59919456.

It is an interprime number because it is at equal distance from previous prime (6549199487) and next prime (6549199513).

It is a self number, because there is not a number n which added to its sum of digits gives 6549199500.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5904946 + ... + 5906054.

It is an arithmetic number, because the mean of its divisors is an integer number (103434240).

Almost surely, 2^6549199500 is an apocalyptic number.

6549199500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6549199500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9929687040).

6549199500 is an abundant number, since it is smaller than the sum of its proper divisors (13310174580).

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

6549199500 is a wasteful number, since it uses less digits than its factorization.

6549199500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289 (or 1277 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 48.

The square root of 6549199500 is about 80927.1246245658. The cubic root of 6549199500 is about 1870.9524064579.

The spelling of 6549199500 in words is "six billion, five hundred forty-nine million, one hundred ninety-nine thousand, five hundred".