1663174348642 has 8 divisors (see below), whose sum is σ = 2494964765916. Its totient is φ = 831519426672.

The previous prime is 1663174348573. The next prime is 1663174348663. The reversal of 1663174348642 is 2468434713661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1522556098561 + 140618250081 = 1233919^2 + 374991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1663174348642² (a number of 25 digits) contains 22 as substring.

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, 33843133 + ... + 33892240.

Almost surely, 2^{1663174348642} is an apocalyptic number.

1663174348642 is a deficient number, since it is larger than the sum of its proper divisors (831790417274).

1663174348642 is a wasteful number, since it uses less digits than its factorization.

1663174348642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67747652.

The product of its digits is 13934592, while the sum is 55.

The spelling of 1663174348642 in words is "one trillion, six hundred sixty-three billion, one hundred seventy-four million, three hundred forty-eight thousand, six hundred forty-two".