194703775568 has 20 divisors (see below), whose sum is σ = 377248235520. Its totient is φ = 97349392224.

The previous prime is 194703775549. The next prime is 194703775577. The reversal of 194703775568 is 865577307491.

It is a happy number.

It is a super-2 number, since 2×194703775568² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 194703775568.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598193 + ... + 864431.

It is an arithmetic number, because the mean of its divisors is an integer number (18862411776).

Almost surely, 2^194703775568 is an apocalyptic number.

It is an amenable number.

194703775568 is a deficient number, since it is larger than the sum of its proper divisors (182544459952).

194703775568 is a wasteful number, since it uses less digits than its factorization.

194703775568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311954 (or 311948 counting only the distinct ones).

The product of its (nonzero) digits is 44452800, while the sum is 62.

The spelling of 194703775568 in words is "one hundred ninety-four billion, seven hundred three million, seven hundred seventy-five thousand, five hundred sixty-eight".