555220717420 has 24 divisors (see below), whose sum is σ = 1206169146000. Its totient is φ = 214430069952.

The previous prime is 555220717411. The next prime is 555220717459. The reversal of 555220717420 is 24717022555.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478637970 + ... + 478639129.

It is an arithmetic number, because the mean of its divisors is an integer number (50257047750).

Almost surely, 2^555220717420 is an apocalyptic number.

It is an amenable number.

555220717420 is an abundant number, since it is smaller than the sum of its proper divisors (650948428580).

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

555220717420 is a wasteful number, since it uses less digits than its factorization.

555220717420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957277137 (or 957277135 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 40.

Adding to 555220717420 its reverse (24717022555), we get a palindrome (579937739975).

The spelling of 555220717420 in words is "five hundred fifty-five billion, two hundred twenty million, seven hundred seventeen thousand, four hundred twenty".