1818253554480 has 960 divisors, whose sum is σ = 7444863498240. Its totient is φ = 405986549760.

The previous prime is 1818253554479. The next prime is 1818253554521. The reversal of 1818253554480 is 844553528181.

1818253554480 is a `hidden beast` number, since 1 + 8 + 1 + 8 + 2 + 5 + 3 + 554 + 4 + 80 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 208822287 + ... + 208830993.

It is an arithmetic number, because the mean of its divisors is an integer number (7755066144).

Almost surely, 2^{1818253554480} is an apocalyptic number.

1818253554480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1818253554480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3722431749120).

1818253554480 is an abundant number, since it is smaller than the sum of its proper divisors (5626609943760).

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

1818253554480 is a wasteful number, since it uses less digits than its factorization.

1818253554480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8815 (or 8792 counting only the distinct ones).

The product of its (nonzero) digits is 6144000, while the sum is 54.

The spelling of 1818253554480 in words is "one trillion, eight hundred eighteen billion, two hundred fifty-three million, five hundred fifty-four thousand, four hundred eighty".