663127472873181 has 8 divisors (see below), whose sum is σ = 890103990434400. Its totient is φ = 439117968613712.

The previous prime is 663127472873171. The next prime is 663127472873207. The reversal of 663127472873181 is 181378274721366.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 663127472873181 - 2¹⁰ = 663127472872157 is a prime.

It is a super-2 number, since 2×663127472873181² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663127472873101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741753324915 + ... + 741753325808.

It is an arithmetic number, because the mean of its divisors is an integer number (111262998804300).

Almost surely, 2^{663127472873181} is an apocalyptic number.

It is an amenable number.

663127472873181 is a deficient number, since it is larger than the sum of its proper divisors (226976517561219).

663127472873181 is a wasteful number, since it uses less digits than its factorization.

663127472873181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483506650875.

The product of its digits is 113799168, while the sum is 66.

The spelling of 663127472873181 in words is "six hundred sixty-three trillion, one hundred twenty-seven billion, four hundred seventy-two million, eight hundred seventy-three thousand, one hundred eighty-one".