555013221204240 has 60 divisors (see below), whose sum is σ = 1863919401213324. Its totient is φ = 148003525654272.

The previous prime is 555013221204199. The next prime is 555013221204307. The reversal of 555013221204240 is 42402122310555.

555013221204240 is a `hidden beast` number, since 5 + 5 + 5 + 0 + 1 + 3 + 221 + 2 + 0 + 424 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 312274702319616 + 242738518884624 = 17671296^2 + 15580068^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 555013221204195 and 555013221204204.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 385425847339 + ... + 385425848778.

Almost surely, 2^{555013221204240} is an apocalyptic number.

It is an amenable number.

555013221204240 is an abundant number, since it is smaller than the sum of its proper divisors (1308906180009084).

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

555013221204240 is a wasteful number, since it uses less digits than its factorization.

555013221204240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770851696136 (or 770851696127 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 555013221204240 its reverse (42402122310555), we get a palindrome (597415343514795).

The spelling of 555013221204240 in words is "five hundred fifty-five trillion, thirteen billion, two hundred twenty-one million, two hundred four thousand, two hundred forty".