55487433478455 has 48 divisors (see below), whose sum is σ = 104923881788544. Its totient is φ = 26902436667840.

The previous prime is 55487433478453. The next prime is 55487433478459.

55487433478455 is a `hidden beast` number, since 5 + 5 + 4 + 8 + 74 + 3 + 34 + 78 + 455 = 666.

55487433478455 is nontrivially palindromic in base 10.

55487433478455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55487433478455 - 2¹ = 55487433478453 is a prime.

It is a super-3 number, since 3×55487433478455³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55487433478453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23083692 + ... + 25373838.

It is an arithmetic number, because the mean of its divisors is an integer number (2185914203928).

Almost surely, 2^{55487433478455} is an apocalyptic number.

55487433478455 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55487433478455 is a deficient number, since it is larger than the sum of its proper divisors (49436448310089).

55487433478455 is a wasteful number, since it uses less digits than its factorization.

55487433478455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339116 (or 2339113 counting only the distinct ones).

The product of its digits is 4515840000, while the sum is 72.

The spelling of 55487433478455 in words is "fifty-five trillion, four hundred eighty-seven billion, four hundred thirty-three million, four hundred seventy-eight thousand, four hundred fifty-five".