19740047466240 has 1152 divisors, whose sum is σ = 76715735040000. Its totient is φ = 4787044614144.

The previous prime is 19740047466239. The next prime is 19740047466299. The reversal of 19740047466240 is 4266474004791.

It is a happy number.

19740047466240 is a `hidden beast` number, since 1 + 9 + 7 + 4 + 0 + 0 + 4 + 7 + 4 + 6 + 624 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2181457236 + ... + 2181466284.

It is an arithmetic number, because the mean of its divisors is an integer number (66593520000).

Almost surely, 2^{19740047466240} is an apocalyptic number.

19740047466240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19740047466240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38357867520000).

19740047466240 is an abundant number, since it is smaller than the sum of its proper divisors (56975687573760).

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

19740047466240 is a wasteful number, since it uses less digits than its factorization.

19740047466240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9222 (or 9202 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 54.

The spelling of 19740047466240 in words is "nineteen trillion, seven hundred forty billion, forty-seven million, four hundred sixty-six thousand, two hundred forty".