556551614320 has 40 divisors (see below), whose sum is σ = 1393519621536. Its totient is φ = 205495980288.

The previous prime is 556551614303. The next prime is 556551614329. The reversal of 556551614320 is 23416155655.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556551614329) 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, 267571852 + ... + 267573931.

Almost surely, 2^556551614320 is an apocalyptic number.

It is an amenable number.

556551614320 is an abundant number, since it is smaller than the sum of its proper divisors (836968007216).

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

556551614320 is a wasteful number, since it uses less digits than its factorization.

556551614320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535145809 (or 535145803 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

Adding to 556551614320 its reverse (23416155655), we get a palindrome (579967769975).

The spelling of 556551614320 in words is "five hundred fifty-six billion, five hundred fifty-one million, six hundred fourteen thousand, three hundred twenty".