55612277888 has 128 divisors (see below), whose sum is σ = 121429808640. Its totient is φ = 25255526400.

The previous prime is 55612277873. The next prime is 55612277957. The reversal of 55612277888 is 88877221655.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29882078 + ... + 29883938.

It is an arithmetic number, because the mean of its divisors is an integer number (948670380).

Almost surely, 2^55612277888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55612277888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60714904320).

55612277888 is an abundant number, since it is smaller than the sum of its proper divisors (65817530752).

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

55612277888 is a wasteful number, since it uses less digits than its factorization.

55612277888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366 (or 2354 counting only the distinct ones).

The product of its digits is 15052800, while the sum is 59.

The spelling of 55612277888 in words is "fifty-five billion, six hundred twelve million, two hundred seventy-seven thousand, eight hundred eighty-eight".