2005553838520 has 16 divisors (see below), whose sum is σ = 4512496136760. Its totient is φ = 802221535392.

The previous prime is 2005553838499. The next prime is 2005553838523. The reversal of 2005553838520 is 258383555002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005553838523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25069422942 + ... + 25069423021.

Almost surely, 2^{2005553838520} is an apocalyptic number.

2005553838520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2005553838520 is an abundant number, since it is smaller than the sum of its proper divisors (2506942298240).

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

2005553838520 is a wasteful number, since it uses less digits than its factorization.

2005553838520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50138845974 (or 50138845970 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 2005553838520 in words is "two trillion, five billion, five hundred fifty-three million, eight hundred thirty-eight thousand, five hundred twenty".