900005555004 has 24 divisors (see below), whose sum is σ = 2100055706448. Its totient is φ = 299995745280.

The previous prime is 900005555003. The next prime is 900005555027. The reversal of 900005555004 is 400555500009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900005555003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128037 + ... + 1347740.

It is an arithmetic number, because the mean of its divisors is an integer number (87502321102).

Almost surely, 2^900005555004 is an apocalyptic number.

It is an amenable number.

900005555004 is an abundant number, since it is smaller than the sum of its proper divisors (1200050151444).

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

900005555004 is a wasteful number, since it uses less digits than its factorization.

900005555004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526605 (or 1526603 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 900005555004 in words is "nine hundred billion, five million, five hundred fifty-five thousand, four".