19440288445144 has 32 divisors (see below), whose sum is σ = 41659853863680. Its totient is φ = 8331133608864.

The previous prime is 19440288445111. The next prime is 19440288445153. The reversal of 19440288445144 is 44154488204491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7594582 + ... + 9826405.

It is an arithmetic number, because the mean of its divisors is an integer number (1301870433240).

Almost surely, 2^{19440288445144} is an apocalyptic number.

19440288445144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19440288445144 is an abundant number, since it is smaller than the sum of its proper divisors (22219565418536).

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

19440288445144 is a wasteful number, since it uses less digits than its factorization.

19440288445144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17440927 (or 17440923 counting only the distinct ones).

The product of its (nonzero) digits is 23592960, while the sum is 58.

The spelling of 19440288445144 in words is "nineteen trillion, four hundred forty billion, two hundred eighty-eight million, four hundred forty-five thousand, one hundred forty-four".