2043561520 has 320 divisors, whose sum is σ = 6459586560. Its totient is φ = 584064000.

The previous prime is 2043561497. The next prime is 2043561521. The reversal of 2043561520 is 251653402.

It is a super-2 number, since 2×2043561520² = 8352287372049420800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (2043561521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13533445 + ... + 13533595.

It is an arithmetic number, because the mean of its divisors is an integer number (20186208).

Almost surely, 2^2043561520 is an apocalyptic number.

2043561520 is a gapful number since it is divisible by the number (20) 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 2043561520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3229793280).

2043561520 is an abundant number, since it is smaller than the sum of its proper divisors (4416025040).

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

2043561520 is a wasteful number, since it uses less digits than its factorization.

2043561520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2043561520 is about 45205.7686584356. The cubic root of 2043561520 is about 1269.0027759760.

The spelling of 2043561520 in words is "two billion, forty-three million, five hundred sixty-one thousand, five hundred twenty".