55533140660 has 24 divisors (see below), whose sum is σ = 116701264680. Its totient is φ = 22197700224.

The previous prime is 55533140647. The next prime is 55533140737. The reversal of 55533140660 is 6604133555.

55533140660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 69122596 + 55464018064 = 8314^2 + 235508^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 942959 + ... + 1000118.

It is an arithmetic number, because the mean of its divisors is an integer number (4862552695).

Almost surely, 2^55533140660 is an apocalyptic number.

It is an amenable number.

55533140660 is an abundant number, since it is smaller than the sum of its proper divisors (61168124020).

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

55533140660 is a wasteful number, since it uses less digits than its factorization.

55533140660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944515 (or 1944513 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 55533140660 in words is "fifty-five billion, five hundred thirty-three million, one hundred forty thousand, six hundred sixty".