1805505552648 has 160 divisors (see below), whose sum is σ = 5858701052160. Its totient is φ = 508792078080.

The previous prime is 1805505552563. The next prime is 1805505552667. The reversal of 1805505552648 is 8462555055081.

It is a happy number.

1805505552648 is a `hidden beast` number, since 1 + 80 + 5 + 5 + 0 + 5 + 552 + 6 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1805505552594 and 1805505552603.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2395168 + ... + 3057423.

It is an arithmetic number, because the mean of its divisors is an integer number (36616881576).

Almost surely, 2^{1805505552648} is an apocalyptic number.

1805505552648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1805505552648 is an abundant number, since it is smaller than the sum of its proper divisors (4053195499512).

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

1805505552648 is a wasteful number, since it uses less digits than its factorization.

1805505552648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452689 (or 5452676 counting only the distinct ones).

The product of its (nonzero) digits is 9600000, while the sum is 54.

The spelling of 1805505552648 in words is "one trillion, eight hundred five billion, five hundred five million, five hundred fifty-two thousand, six hundred forty-eight".