19820016826896 has 160 divisors (see below), whose sum is σ = 61000285731840. Its totient is φ = 5465975155200.

The previous prime is 19820016826889. The next prime is 19820016826921. The reversal of 19820016826896 is 69862861002891.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19847386 + ... + 20822073.

It is an arithmetic number, because the mean of its divisors is an integer number (381251785824).

Almost surely, 2^{19820016826896} is an apocalyptic number.

19820016826896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19820016826896 is an abundant number, since it is smaller than the sum of its proper divisors (41180268904944).

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

19820016826896 is a wasteful number, since it uses less digits than its factorization.

19820016826896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40669565 (or 40669559 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 66.

The spelling of 19820016826896 in words is "nineteen trillion, eight hundred twenty billion, sixteen million, eight hundred twenty-six thousand, eight hundred ninety-six".