19999386000000 has 3136 divisors, whose sum is σ = 86226349413600. Its totient is φ = 4572288000000.

The previous prime is 19999385999981. The next prime is 19999386000017. The reversal of 19999386000000 is 68399991.

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

It is an unprimeable number.

It is a polite number, since it can be written in 391 ways as a sum of consecutive naturals, for example, 465101999979 + ... + 465102000021.

Almost surely, 2^{19999386000000} is an apocalyptic number.

19999386000000 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 19999386000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43113174706800).

19999386000000 is an abundant number, since it is smaller than the sum of its proper divisors (66226963413600).

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

19999386000000 is an frugal number, since it uses more digits than its factorization.

19999386000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The spelling of 19999386000000 in words is "nineteen trillion, nine hundred ninety-nine billion, three hundred eighty-six million", and thus it is an aban number.