55557831960 has 80 divisors (see below), whose sum is σ = 186736057200. Its totient is φ = 14815420992.

The previous prime is 55557831941. The next prime is 55557831977. The reversal of 55557831960 is 6913875555.

55557831960 is a `hidden beast` number, since 5 + 5 + 5 + 578 + 3 + 1 + 9 + 60 = 666.

55557831960 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 55557831897 and 55557831906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8570500 + ... + 8576979.

It is an arithmetic number, because the mean of its divisors is an integer number (2334200715).

Almost surely, 2^55557831960 is an apocalyptic number.

It is an amenable number.

55557831960 is an abundant number, since it is smaller than the sum of its proper divisors (131178225240).

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

55557831960 is a wasteful number, since it uses less digits than its factorization.

55557831960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17147502 (or 17147489 counting only the distinct ones).

The product of its (nonzero) digits is 5670000, while the sum is 54.

The spelling of 55557831960 in words is "fifty-five billion, five hundred fifty-seven million, eight hundred thirty-one thousand, nine hundred sixty".