4545545440 has 24 divisors (see below), whose sum is σ = 10738851480. Its totient is φ = 1818218112.

The previous prime is 4545545429. The next prime is 4545545441. The reversal of 4545545440 is 445455454.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 4545545393 and 4545545402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4545545441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14204670 + ... + 14204989.

It is an arithmetic number, because the mean of its divisors is an integer number (447452145).

Almost surely, 2^4545545440 is an apocalyptic number.

4545545440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4545545440 is an abundant number, since it is smaller than the sum of its proper divisors (6193306040).

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

4545545440 is a wasteful number, since it uses less digits than its factorization.

4545545440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28409674 (or 28409666 counting only the distinct ones).

The product of its (nonzero) digits is 640000, while the sum is 40.

The square root of 4545545440 is about 67420.6603349448. The cubic root of 4545545440 is about 1656.5148538780.

The spelling of 4545545440 in words is "four billion, five hundred forty-five million, five hundred forty-five thousand, four hundred forty".