19904182411212 has 432 divisors, whose sum is σ = 59115131056800. Its totient is φ = 5808347274240.

The previous prime is 19904182411181. The next prime is 19904182411273. The reversal of 19904182411212 is 21211428140991.

19904182411212 is a `hidden beast` number, since 1 + 9 + 9 + 0 + 4 + 18 + 2 + 411 + 212 = 666.

It is a super-2 number, since 2×19904182411212² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3424078018 + ... + 3424083830.

It is an arithmetic number, because the mean of its divisors is an integer number (136840581150).

Almost surely, 2^{19904182411212} is an apocalyptic number.

19904182411212 is a gapful number since it is divisible by the number (12) 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 19904182411212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29557565528400).

19904182411212 is an abundant number, since it is smaller than the sum of its proper divisors (39210948645588).

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

19904182411212 is a wasteful number, since it uses less digits than its factorization.

19904182411212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6290 (or 6267 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The spelling of 19904182411212 in words is "nineteen trillion, nine hundred four billion, one hundred eighty-two million, four hundred eleven thousand, two hundred twelve".