19770865536000 has 704 divisors, whose sum is σ = 70228924047360. Its totient is φ = 4926136320000.

The previous prime is 19770865535921. The next prime is 19770865536047. The reversal of 19770865536000 is 63556807791.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 345187365 + ... + 345244635.

Almost surely, 2^{19770865536000} is an apocalyptic number.

19770865536000 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 19770865536000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35114462023680).

19770865536000 is an abundant number, since it is smaller than the sum of its proper divisors (50458058511360).

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

19770865536000 is a wasteful number, since it uses less digits than its factorization.

19770865536000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57369 (or 57341 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 57.

The spelling of 19770865536000 in words is "nineteen trillion, seven hundred seventy billion, eight hundred sixty-five million, five hundred thirty-six thousand".