54551644660 has 12 divisors (see below), whose sum is σ = 114558453828. Its totient is φ = 21820657856.

The previous prime is 54551644579. The next prime is 54551644687. The reversal of 54551644660 is 6644615545.

It can be written as a sum of positive squares in 2 ways, for example, as 8921558116 + 45630086544 = 94454^2 + 213612^2 .

It is a super-2 number, since 2×54551644660² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54551644660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1363791097 + ... + 1363791136.

It is an arithmetic number, because the mean of its divisors is an integer number (9546537819).

Almost surely, 2^54551644660 is an apocalyptic number.

It is an amenable number.

54551644660 is an abundant number, since it is smaller than the sum of its proper divisors (60006809168).

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

54551644660 is a wasteful number, since it uses less digits than its factorization.

54551644660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727582242 (or 2727582240 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 54551644660 in words is "fifty-four billion, five hundred fifty-one million, six hundred forty-four thousand, six hundred sixty".