19869913090896 has 180 divisors, whose sum is σ = 58300015310208. Its totient is φ = 5826952348800.

The previous prime is 19869913090889. The next prime is 19869913090987. The reversal of 19869913090896 is 69809031996891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3801505 + ... + 7361471.

Almost surely, 2^{19869913090896} is an apocalyptic number.

19869913090896 is a gapful number since it is divisible by the number (16) 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 19869913090896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29150007655104).

19869913090896 is an abundant number, since it is smaller than the sum of its proper divisors (38430102219312).

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

19869913090896 is a wasteful number, since it uses less digits than its factorization.

19869913090896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560062 (or 3560014 counting only the distinct ones).

The product of its (nonzero) digits is 408146688, while the sum is 78.

The spelling of 19869913090896 in words is "nineteen trillion, eight hundred sixty-nine billion, nine hundred thirteen million, ninety thousand, eight hundred ninety-six".