555445044420 has 96 divisors (see below), whose sum is σ = 1854703484928. Its totient is φ = 121438914432.

The previous prime is 555445044403. The next prime is 555445044421. The reversal of 555445044420 is 24440544555.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (555445044421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28740084 + ... + 28759403.

It is an arithmetic number, because the mean of its divisors is an integer number (19319827968).

Almost surely, 2^555445044420 is an apocalyptic number.

It is an amenable number.

555445044420 is an abundant number, since it is smaller than the sum of its proper divisors (1299258440508).

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

555445044420 is a wasteful number, since it uses less digits than its factorization.

555445044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57499529 (or 57499527 counting only the distinct ones).

The product of its (nonzero) digits is 1280000, while the sum is 42.

Adding to 555445044420 its reverse (24440544555), we get a palindrome (579885588975).

The spelling of 555445044420 in words is "five hundred fifty-five billion, four hundred forty-five million, forty-four thousand, four hundred twenty".