17642194844 has 12 divisors (see below), whose sum is σ = 30919449624. Its totient is φ = 8808066384.

The previous prime is 17642194837. The next prime is 17642194883. The reversal of 17642194844 is 44849124671.

It is a super-2 number, since 2×17642194844² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17642194792 and 17642194801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3254714 + ... + 3260129.

It is an arithmetic number, because the mean of its divisors is an integer number (2576620802).

Almost surely, 2^17642194844 is an apocalyptic number.

It is an amenable number.

17642194844 is a deficient number, since it is larger than the sum of its proper divisors (13277254780).

17642194844 is a wasteful number, since it uses less digits than its factorization.

17642194844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6515524 (or 6515522 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 50.

The spelling of 17642194844 in words is "seventeen billion, six hundred forty-two million, one hundred ninety-four thousand, eight hundred forty-four".