6553049568 has 144 divisors (see below), whose sum is σ = 19679854320. Its totient is φ = 1897611264.

The previous prime is 6553049563. The next prime is 6553049627. The reversal of 6553049568 is 8659403556.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 6553049568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6553049563) 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, 351588 + ... + 369756.

It is an arithmetic number, because the mean of its divisors is an integer number (136665655).

Almost surely, 2^6553049568 is an apocalyptic number.

6553049568 is a gapful number since it is divisible by the number (68) 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 6553049568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9839927160).

6553049568 is an abundant number, since it is smaller than the sum of its proper divisors (13126804752).

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

6553049568 is a wasteful number, since it uses less digits than its factorization.

6553049568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18229 (or 18204 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 51.

The square root of 6553049568 is about 80950.9083827970. The cubic root of 6553049568 is about 1871.3189592924.

The spelling of 6553049568 in words is "six billion, five hundred fifty-three million, forty-nine thousand, five hundred sixty-eight".