19864484476396 has 96 divisors (see below), whose sum is σ = 41262451574400. Its totient is φ = 8187105024000.

The previous prime is 19864484476393. The next prime is 19864484476547. The reversal of 19864484476396 is 69367448446891.

It is a super-2 number, since 2×19864484476396² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19864484476393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 674982210 + ... + 675011638.

It is an arithmetic number, because the mean of its divisors is an integer number (429817203900).

Almost surely, 2^{19864484476396} 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 19864484476396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20631225787200).

19864484476396 is an abundant number, since it is smaller than the sum of its proper divisors (21397967098004).

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

19864484476396 is a wasteful number, since it uses less digits than its factorization.

19864484476396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32747 (or 32745 counting only the distinct ones).

The product of its digits is 6019743744, while the sum is 79.

The spelling of 19864484476396 in words is "nineteen trillion, eight hundred sixty-four billion, four hundred eighty-four million, four hundred seventy-six thousand, three hundred ninety-six".