55557888899 has 2 divisors, whose sum is σ = 55557888900. Its totient is φ = 55557888898.

The previous prime is 55557888863. The next prime is 55557888913. The reversal of 55557888899 is 99888875555.

55557888899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55557888899 - 2⁸ = 55557888643 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (55557882899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27778944449 + 27778944450.

It is an arithmetic number, because the mean of its divisors is an integer number (27778944450).

Almost surely, 2^55557888899 is an apocalyptic number.

55557888899 is a deficient number, since it is larger than the sum of its proper divisors (1).

55557888899 is an equidigital number, since it uses as much as digits as its factorization.

55557888899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520000, while the sum is 77.

The spelling of 55557888899 in words is "fifty-five billion, five hundred fifty-seven million, eight hundred eighty-eight thousand, eight hundred ninety-nine".