6645048480 has 144 divisors (see below), whose sum is σ = 25915728384. Its totient is φ = 1518865920.

The previous prime is 6645048461. The next prime is 6645048539. The reversal of 6645048480 is 848405466.

6645048480 is a `hidden beast` number, since 6 + 64 + 504 + 8 + 4 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

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, 319536 + ... + 339695.

It is an arithmetic number, because the mean of its divisors is an integer number (179970336).

Almost surely, 2^6645048480 is an apocalyptic number.

6645048480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6645048480 is an abundant number, since it is smaller than the sum of its proper divisors (19270679904).

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

6645048480 is a wasteful number, since it uses less digits than its factorization.

6645048480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659259 (or 659248 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The square root of 6645048480 is about 81517.1667809916. The cubic root of 6645048480 is about 1880.0355055917.

The spelling of 6645048480 in words is "six billion, six hundred forty-five million, forty-eight thousand, four hundred eighty".