55117493855424 has 3402 divisors, whose sum is σ = 228872951559252. Its totient is φ = 13114105804800.

The previous prime is 55117493855423. The next prime is 55117493855519. The reversal of 55117493855424 is 42455839471155.

55117493855424 is a `hidden beast` number, since 5 + 5 + 1 + 1 + 7 + 4 + 9 + 3 + 85 + 542 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (3402).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (55117493855423) by changing a digit.

It is a polite number, since it can be written in 485 ways as a sum of consecutive naturals, for example, 420744227839 + ... + 420744227969.

Almost surely, 2^{55117493855424} is an apocalyptic number.

55117493855424 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55117493855424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114436475779626).

55117493855424 is an abundant number, since it is smaller than the sum of its proper divisors (173755457703828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55117493855424 is a wasteful number, since it uses less digits than its factorization.

55117493855424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 167 counting only the distinct ones).

The product of its digits is 120960000, while the sum is 63.

The spelling of 55117493855424 in words is "fifty-five trillion, one hundred seventeen billion, four hundred ninety-three million, eight hundred fifty-five thousand, four hundred twenty-four".