194322613561 has 16 divisors (see below), whose sum is σ = 196811596800. Its totient is φ = 191844292608.

The previous prime is 194322613559. The next prime is 194322613567. The reversal of 194322613561 is 165316223491.

It is a cyclic number.

It is not a de Polignac number, because 194322613561 - 2¹ = 194322613559 is a prime.

It is a super-2 number, since 2×194322613561² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194322613567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124644900 + ... + 124646458.

It is an arithmetic number, because the mean of its divisors is an integer number (12300724800).

Almost surely, 2^194322613561 is an apocalyptic number.

It is an amenable number.

194322613561 is a deficient number, since it is larger than the sum of its proper divisors (2488983239).

194322613561 is a wasteful number, since it uses less digits than its factorization.

194322613561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008.

The product of its digits is 233280, while the sum is 43.

The spelling of 194322613561 in words is "one hundred ninety-four billion, three hundred twenty-two million, six hundred thirteen thousand, five hundred sixty-one".