55557888889 has 8 divisors (see below), whose sum is σ = 56024196480. Its totient is φ = 55092876000.

The previous prime is 55557888863. The next prime is 55557888899. The reversal of 55557888889 is 98888875555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55557888889 - 2²⁹ = 55021017977 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (55557888899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237397 + ... + 409234.

It is an arithmetic number, because the mean of its divisors is an integer number (7003024560).

Almost surely, 2^55557888889 is an apocalyptic number.

It is an amenable number.

55557888889 is a deficient number, since it is larger than the sum of its proper divisors (466307591).

55557888889 is a wasteful number, since it uses less digits than its factorization.

55557888889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647351.

The product of its digits is 1290240000, while the sum is 76.

The spelling of 55557888889 in words is "fifty-five billion, five hundred fifty-seven million, eight hundred eighty-eight thousand, eight hundred eighty-nine".