5556578620 has 12 divisors (see below), whose sum is σ = 11668815144. Its totient is φ = 2222631440.

The previous prime is 5556578609. The next prime is 5556578623. The reversal of 5556578620 is 268756555.

It is a super-2 number, since 2×5556578620² = 61751131920482208800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5556578623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138914446 + ... + 138914485.

It is an arithmetic number, because the mean of its divisors is an integer number (972401262).

Almost surely, 2^5556578620 is an apocalyptic number.

It is an amenable number.

5556578620 is an abundant number, since it is smaller than the sum of its proper divisors (6112236524).

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

5556578620 is a wasteful number, since it uses less digits than its factorization.

5556578620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277828940 (or 277828938 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 49.

The square root of 5556578620 is about 74542.4618589968. The cubic root of 5556578620 is about 1771.2063254514.

The spelling of 5556578620 in words is "five billion, five hundred fifty-six million, five hundred seventy-eight thousand, six hundred twenty".