55398448485 has 144 divisors (see below), whose sum is σ = 107703872640. Its totient is φ = 26257271040.

The previous prime is 55398448477. The next prime is 55398448487. The reversal of 55398448485 is 58484489355.

55398448485 is a `hidden beast` number, since 5 + 5 + 39 + 84 + 48 + 485 = 666.

It is not a de Polignac number, because 55398448485 - 2³ = 55398448477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55398448487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 23970480 + ... + 23972790.

It is an arithmetic number, because the mean of its divisors is an integer number (747943560).

Almost surely, 2^55398448485 is an apocalyptic number.

It is an amenable number.

55398448485 is a deficient number, since it is larger than the sum of its proper divisors (52305424155).

55398448485 is a wasteful number, since it uses less digits than its factorization.

55398448485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440 (or 2414 counting only the distinct ones).

The product of its digits is 110592000, while the sum is 63.

The spelling of 55398448485 in words is "fifty-five billion, three hundred ninety-eight million, four hundred forty-eight thousand, four hundred eighty-five".