55146843648 has 480 divisors, whose sum is σ = 178261923840. Its totient is φ = 16303472640.

The previous prime is 55146843623. The next prime is 55146843667. The reversal of 55146843648 is 84634864155.

55146843648 is a `hidden beast` number, since 5 + 514 + 6 + 84 + 3 + 6 + 48 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 55146843594 and 55146843603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203493753 + ... + 203494023.

It is an arithmetic number, because the mean of its divisors is an integer number (371379008).

Almost surely, 2^55146843648 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 55146843648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89130961920).

55146843648 is an abundant number, since it is smaller than the sum of its proper divisors (123115080192).

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

55146843648 is a wasteful number, since it uses less digits than its factorization.

55146843648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 411 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 54.

The spelling of 55146843648 in words is "fifty-five billion, one hundred forty-six million, eight hundred forty-three thousand, six hundred forty-eight".