1544440504068 has 216 divisors, whose sum is σ = 4984604089920. Its totient is φ = 394576617600.

The previous prime is 1544440504063. The next prime is 1544440504073. The reversal of 1544440504068 is 8604050444451.

1544440504068 is a `hidden beast` number, since 1 + 5 + 4 + 44 + 40 + 504 + 0 + 68 = 666.

It is an interprime number because it is at equal distance from previous prime (1544440504063) and next prime (1544440504073).

It is not an unprimeable number, because it can be changed into a prime (1544440504063) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1444843 + ... + 2275181.

Almost surely, 2^{1544440504068} is an apocalyptic number.

1544440504068 is a gapful number since it is divisible by the number (18) 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 1544440504068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2492302044960).

1544440504068 is an abundant number, since it is smaller than the sum of its proper divisors (3440163585852).

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

1544440504068 is a wasteful number, since it uses less digits than its factorization.

1544440504068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830439 (or 830423 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 45.

The spelling of 1544440504068 in words is "one trillion, five hundred forty-four billion, four hundred forty million, five hundred four thousand, sixty-eight".