556720361620 has 48 divisors (see below), whose sum is σ = 1207900552320. Its totient is φ = 215372075904.

The previous prime is 556720361609. The next prime is 556720361623. The reversal of 556720361620 is 26163027655.

It is a super-2 number, since 2×556720361620² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556720361623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2128890 + ... + 2376049.

It is an arithmetic number, because the mean of its divisors is an integer number (25164594840).

Almost surely, 2^556720361620 is an apocalyptic number.

It is an amenable number.

556720361620 is an abundant number, since it is smaller than the sum of its proper divisors (651180190700).

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

556720361620 is a wasteful number, since it uses less digits than its factorization.

556720361620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4505152 (or 4505150 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 556720361620 in words is "five hundred fifty-six billion, seven hundred twenty million, three hundred sixty-one thousand, six hundred twenty".