55188964784385 has 16 divisors (see below), whose sum is σ = 98113715172480. Its totient is φ = 29434114551600.

The previous prime is 55188964784363. The next prime is 55188964784479. The reversal of 55188964784385 is 58348746988155.

55188964784385 is a `hidden beast` number, since 5 + 5 + 1 + 88 + 96 + 4 + 78 + 4 + 385 = 666.

It is not a de Polignac number, because 55188964784385 - 2¹³ = 55188964776193 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204403573141 + ... + 204403573410.

It is an arithmetic number, because the mean of its divisors is an integer number (6132107198280).

Almost surely, 2^{55188964784385} is an apocalyptic number.

It is an amenable number.

55188964784385 is a deficient number, since it is larger than the sum of its proper divisors (42924750388095).

55188964784385 is a wasteful number, since it uses less digits than its factorization.

55188964784385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408807146565 (or 408807146559 counting only the distinct ones).

The product of its digits is 9289728000, while the sum is 81.

The spelling of 55188964784385 in words is "fifty-five trillion, one hundred eighty-eight billion, nine hundred sixty-four million, seven hundred eighty-four thousand, three hundred eighty-five".