64196219443212 has 120 divisors (see below), whose sum is σ = 176854844683440. Its totient is φ = 20249477867520.

The previous prime is 64196219443183. The next prime is 64196219443253. The reversal of 64196219443212 is 21234491269146.

64196219443212 is a `hidden beast` number, since 6 + 4 + 1 + 9 + 6 + 2 + 194 + 432 + 12 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 494973 + ... + 11341844.

It is an arithmetic number, because the mean of its divisors is an integer number (1473790372362).

Almost surely, 2^{64196219443212} 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 64196219443212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88427422341720).

64196219443212 is an abundant number, since it is smaller than the sum of its proper divisors (112658625240228).

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

64196219443212 is a wasteful number, since it uses less digits than its factorization.

64196219443212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11837733 (or 11837722 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The spelling of 64196219443212 in words is "sixty-four trillion, one hundred ninety-six billion, two hundred nineteen million, four hundred forty-three thousand, two hundred twelve".