194566212768 has 48 divisors (see below), whose sum is σ = 511921420416. Its totient is φ = 64704913920.

The previous prime is 194566212749. The next prime is 194566212781. The reversal of 194566212768 is 867212665491.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×194566212768² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2309821 + ... + 2392572.

It is an arithmetic number, because the mean of its divisors is an integer number (10665029592).

Almost surely, 2^194566212768 is an apocalyptic number.

It is an amenable number.

194566212768 is an abundant number, since it is smaller than the sum of its proper divisors (317355207648).

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

194566212768 is a wasteful number, since it uses less digits than its factorization.

194566212768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702837 (or 4702829 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 57.

The spelling of 194566212768 in words is "one hundred ninety-four billion, five hundred sixty-six million, two hundred twelve thousand, seven hundred sixty-eight".