1544244220454 has 12 divisors (see below), whose sum is σ = 2508254666316. Its totient is φ = 712728101592.

The previous prime is 1544244220451. The next prime is 1544244220459. The reversal of 1544244220454 is 4540224424451.

It is a super-2 number, since 2×1544244220454² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1544244220451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2284384604 + ... + 2284385279.

It is an arithmetic number, because the mean of its divisors is an integer number (209021222193).

Almost surely, 2^{1544244220454} is an apocalyptic number.

1544244220454 is a deficient number, since it is larger than the sum of its proper divisors (964010445862).

1544244220454 is a wasteful number, since it uses less digits than its factorization.

1544244220454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568769911 (or 4568769898 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 41.

The spelling of 1544244220454 in words is "one trillion, five hundred forty-four billion, two hundred forty-four million, two hundred twenty thousand, four hundred fifty-four".