4545665280 has 432 divisors, whose sum is σ = 17142128640. Its totient is φ = 1105477632.

The previous prime is 4545665263. The next prime is 4545665297. The reversal of 4545665280 is 825665454.

4545665280 is a `hidden beast` number, since 4 + 5 + 4 + 566 + 5 + 2 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (4545665263) and next prime (4545665297).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19019401 + ... + 19019639.

Almost surely, 2^4545665280 is an apocalyptic number.

4545665280 is a gapful number since it is divisible by the number (40) 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 4545665280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8571064320).

4545665280 is an abundant number, since it is smaller than the sum of its proper divisors (12596463360).

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

4545665280 is a wasteful number, since it uses less digits than its factorization.

4545665280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 45.

The square root of 4545665280 is about 67421.5490774278. The cubic root of 4545665280 is about 1656.5294113533.

The spelling of 4545665280 in words is "four billion, five hundred forty-five million, six hundred sixty-five thousand, two hundred eighty".