19444928750940 has 96 divisors (see below), whose sum is σ = 67880478564864. Its totient is φ = 4040504674560.

The previous prime is 19444928750909. The next prime is 19444928751011. The reversal of 19444928750940 is 4905782944491.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2104424899 + ... + 2104434138.

It is an arithmetic number, because the mean of its divisors is an integer number (707088318384).

Almost surely, 2^{19444928750940} is an apocalyptic number.

19444928750940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19444928750940 is an abundant number, since it is smaller than the sum of its proper divisors (48435549813924).

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

19444928750940 is a wasteful number, since it uses less digits than its factorization.

19444928750940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208859067 (or 4208859065 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 66.

The spelling of 19444928750940 in words is "nineteen trillion, four hundred forty-four billion, nine hundred twenty-eight million, seven hundred fifty thousand, nine hundred forty".