4205645520 has 80 divisors (see below), whose sum is σ = 13355520192. Its totient is φ = 1094149120.

The previous prime is 4205645467. The next prime is 4205645533. The reversal of 4205645520 is 255465024.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203862 + ... + 223541.

Almost surely, 2^4205645520 is an apocalyptic number.

4205645520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4205645520 is an abundant number, since it is smaller than the sum of its proper divisors (9149874672).

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

4205645520 is a wasteful number, since it uses less digits than its factorization.

4205645520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427460 (or 427454 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

The square root of 4205645520 is about 64850.9484895942. The cubic root of 4205645520 is about 1614.1512305914.

The spelling of 4205645520 in words is "four billion, two hundred five million, six hundred forty-five thousand, five hundred twenty".