6653495520 has 672 divisors, whose sum is σ = 27962262720. Its totient is φ = 1463132160.

The previous prime is 6653495509. The next prime is 6653495521. The reversal of 6653495520 is 255943566.

6653495520 is a `hidden beast` number, since 6 + 6 + 5 + 34 + 95 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6653495521) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 23677780 + ... + 23678060.

It is an arithmetic number, because the mean of its divisors is an integer number (41610510).

Almost surely, 2^6653495520 is an apocalyptic number.

6653495520 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 6653495520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13981131360).

6653495520 is an abundant number, since it is smaller than the sum of its proper divisors (21308767200).

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

6653495520 is a wasteful number, since it uses less digits than its factorization.

6653495520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The square root of 6653495520 is about 81568.9617440359. The cubic root of 6653495520 is about 1880.8317882590.

The spelling of 6653495520 in words is "six billion, six hundred fifty-three million, four hundred ninety-five thousand, five hundred twenty".