55413939168 has 144 divisors (see below), whose sum is σ = 181304978400. Its totient is φ = 15726210048.

The previous prime is 55413939157. The next prime is 55413939179. The reversal of 55413939168 is 86193931455.

55413939168 is a `hidden beast` number, since 5 + 541 + 3 + 9 + 3 + 91 + 6 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (55413939157) and next prime (55413939179).

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×55413939168² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208146 + ... + 392622.

It is an arithmetic number, because the mean of its divisors is an integer number (1259062350).

Almost surely, 2^55413939168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55413939168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90652489200).

55413939168 is an abundant number, since it is smaller than the sum of its proper divisors (125891039232).

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

55413939168 is a wasteful number, since it uses less digits than its factorization.

55413939168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184649 (or 184638 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 55413939168 in words is "fifty-five billion, four hundred thirteen million, nine hundred thirty-nine thousand, one hundred sixty-eight".