55554851064440 has 256 divisors, whose sum is σ = 156961532851200. Its totient is φ = 17227870580736.

The previous prime is 55554851064421. The next prime is 55554851064521. The reversal of 55554851064440 is 4446015845555.

It is a super-2 number, since 2×55554851064440² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65510012 + ... + 66352628.

It is an arithmetic number, because the mean of its divisors is an integer number (613130987700).

Almost surely, 2^{55554851064440} 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 55554851064440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78480766425600).

55554851064440 is an abundant number, since it is smaller than the sum of its proper divisors (101406681786760).

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

55554851064440 is a wasteful number, since it uses less digits than its factorization.

55554851064440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843014 (or 843010 counting only the distinct ones).

The product of its (nonzero) digits is 38400000, while the sum is 56.

The spelling of 55554851064440 in words is "fifty-five trillion, five hundred fifty-four billion, eight hundred fifty-one million, sixty-four thousand, four hundred forty".