20444244144 has 40 divisors (see below), whose sum is σ = 54635483760. Its totient is φ = 6579756288.

The previous prime is 20444244101. The next prime is 20444244187. The reversal of 20444244144 is 44144244402.

It is an interprime number because it is at equal distance from previous prime (20444244101) and next prime (20444244187).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7342087 + ... + 7344870.

It is an arithmetic number, because the mean of its divisors is an integer number (1365887094).

Almost surely, 2^20444244144 is an apocalyptic number.

20444244144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20444244144 is an abundant number, since it is smaller than the sum of its proper divisors (34191239616).

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

20444244144 is a wasteful number, since it uses less digits than its factorization.

20444244144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14686997 (or 14686991 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 33.

Adding to 20444244144 its reverse (44144244402), we get a palindrome (64588488546).

The spelling of 20444244144 in words is "twenty billion, four hundred forty-four million, two hundred forty-four thousand, one hundred forty-four".