55155044660 has 96 divisors (see below), whose sum is σ = 125163988992. Its totient is φ = 20364664320.

The previous prime is 55155044657. The next prime is 55155044689. The reversal of 55155044660 is 6644055155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1468637 + ... + 1505723.

It is an arithmetic number, because the mean of its divisors is an integer number (1303791552).

Almost surely, 2^55155044660 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 55155044660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62581994496).

55155044660 is an abundant number, since it is smaller than the sum of its proper divisors (70008944332).

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

55155044660 is a wasteful number, since it uses less digits than its factorization.

55155044660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37233 (or 37231 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 55155044660 in words is "fifty-five billion, one hundred fifty-five million, forty-four thousand, six hundred sixty".