19747304947040 has 48 divisors (see below), whose sum is σ = 50894190481680. Its totient is φ = 7180838161920.

The previous prime is 19747304947037. The next prime is 19747304947049. The reversal of 19747304947040 is 4074940374791.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19747304947049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5610028055 + ... + 5610031574.

It is an arithmetic number, because the mean of its divisors is an integer number (1060295635035).

Almost surely, 2^{19747304947040} is an apocalyptic number.

19747304947040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19747304947040 is an abundant number, since it is smaller than the sum of its proper divisors (31146885534640).

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

19747304947040 is a wasteful number, since it uses less digits than its factorization.

19747304947040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11220059655 (or 11220059647 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 59.

The spelling of 19747304947040 in words is "nineteen trillion, seven hundred forty-seven billion, three hundred four million, nine hundred forty-seven thousand, forty".