55146998880 has 192 divisors, whose sum is σ = 193415040000. Its totient is φ = 14675351040.

The previous prime is 55146998801. The next prime is 55146998897. The reversal of 55146998880 is 8889964155.

55146998880 is a `hidden beast` number, since 5 + 5 + 1 + 469 + 98 + 8 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2108121 + ... + 2134119.

It is an arithmetic number, because the mean of its divisors is an integer number (1007370000).

Almost surely, 2^55146998880 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 55146998880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96707520000).

55146998880 is an abundant number, since it is smaller than the sum of its proper divisors (138268041120).

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

55146998880 is a wasteful number, since it uses less digits than its factorization.

55146998880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26514 (or 26500 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 63.

The spelling of 55146998880 in words is "fifty-five billion, one hundred forty-six million, nine hundred ninety-eight thousand, eight hundred eighty".