55555560620 has 48 divisors (see below), whose sum is σ = 134216398848. Its totient is φ = 18921470400.

The previous prime is 55555560607. The next prime is 55555560631. The reversal of 55555560620 is 2606555555.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1292852 + ... + 1335131.

It is an arithmetic number, because the mean of its divisors is an integer number (2796174976).

Almost surely, 2^55555560620 is an apocalyptic number.

It is an amenable number.

55555560620 is an abundant number, since it is smaller than the sum of its proper divisors (78660838228).

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

55555560620 is a wasteful number, since it uses less digits than its factorization.

55555560620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628150 (or 2628148 counting only the distinct ones).

The product of its (nonzero) digits is 1125000, while the sum is 44.

The spelling of 55555560620 in words is "fifty-five billion, five hundred fifty-five million, five hundred sixty thousand, six hundred twenty".