55550550555486 has 144 divisors (see below), whose sum is σ = 142120773933840. Its totient is φ = 15632384866560.

The previous prime is 55550550555469. The next prime is 55550550555517. The reversal of 55550550555486 is 68455505505555.

55550550555486 is a `hidden beast` number, since 5 + 5 + 5 + 50 + 5 + 50 + 5 + 55 + 486 = 666.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 421215196 + ... + 421347056.

It is an arithmetic number, because the mean of its divisors is an integer number (986949818985).

Almost surely, 2^{55550550555486} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55550550555486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71060386966920).

55550550555486 is an abundant number, since it is smaller than the sum of its proper divisors (86570223378354).

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

55550550555486 is a wasteful number, since it uses less digits than its factorization.

55550550555486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139079 (or 139069 counting only the distinct ones).

The product of its (nonzero) digits is 375000000, while the sum is 63.

The spelling of 55550550555486 in words is "fifty-five trillion, five hundred fifty billion, five hundred fifty million, five hundred fifty-five thousand, four hundred eighty-six".