2444454636820 has 48 divisors (see below), whose sum is σ = 5875280949888. Its totient is φ = 836871615360.

The previous prime is 2444454636797. The next prime is 2444454636821. The reversal of 2444454636820 is 286364544442.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2444454636821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12686511 + ... + 12877750.

It is an arithmetic number, because the mean of its divisors is an integer number (122401686456).

Almost surely, 2^{2444454636820} is an apocalyptic number.

2444454636820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2444454636820 is an abundant number, since it is smaller than the sum of its proper divisors (3430826313068).

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

2444454636820 is a wasteful number, since it uses less digits than its factorization.

2444454636820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25564960 (or 25564958 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 52.

The spelling of 2444454636820 in words is "two trillion, four hundred forty-four billion, four hundred fifty-four million, six hundred thirty-six thousand, eight hundred twenty".