19660019622936 has 288 divisors, whose sum is σ = 63421357230000. Its totient is φ = 5059646000640.

The previous prime is 19660019622869. The next prime is 19660019623007. The reversal of 19660019622936 is 63922691006691.

It is a self number, because there is not a number n which added to its sum of digits gives 19660019622936.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14876490 + ... + 16144038.

Almost surely, 2^{19660019622936} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19660019622936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31710678615000).

19660019622936 is an abundant number, since it is smaller than the sum of its proper divisors (43761337607064).

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

19660019622936 is a wasteful number, since it uses less digits than its factorization.

19660019622936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267703 (or 1267681 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 60.

The spelling of 19660019622936 in words is "nineteen trillion, six hundred sixty billion, nineteen million, six hundred twenty-two thousand, nine hundred thirty-six".