55271618720 has 24 divisors (see below), whose sum is σ = 130579199604. Its totient is φ = 22108647424.

The previous prime is 55271618693. The next prime is 55271618767. The reversal of 55271618720 is 2781617255.

It can be written as a sum of positive squares in 2 ways, for example, as 54611950864 + 659667856 = 233692^2 + 25684^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172723649 + ... + 172723968.

Almost surely, 2^55271618720 is an apocalyptic number.

It is an amenable number.

55271618720 is an abundant number, since it is smaller than the sum of its proper divisors (75307580884).

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

55271618720 is a wasteful number, since it uses less digits than its factorization.

55271618720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345447632 (or 345447624 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 44.

The spelling of 55271618720 in words is "fifty-five billion, two hundred seventy-one million, six hundred eighteen thousand, seven hundred twenty".