163412781287751 has 6 divisors (see below), whose sum is σ = 236040684082320. Its totient is φ = 108941854191828.

The previous prime is 163412781287747. The next prime is 163412781287851. The reversal of 163412781287751 is 157782187214361.

163412781287751 is a `hidden beast` number, since 1 + 6 + 3 + 412 + 7 + 81 + 28 + 77 + 51 = 666.

It is not a de Polignac number, because 163412781287751 - 2² = 163412781287747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163412781287051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9078487849311 + ... + 9078487849328.

It is an arithmetic number, because the mean of its divisors is an integer number (39340114013720).

Almost surely, 2^{163412781287751} is an apocalyptic number.

163412781287751 is a deficient number, since it is larger than the sum of its proper divisors (72627902794569).

163412781287751 is a wasteful number, since it uses less digits than its factorization.

163412781287751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18156975698645 (or 18156975698642 counting only the distinct ones).

The product of its digits is 31610880, while the sum is 63.

The spelling of 163412781287751 in words is "one hundred sixty-three trillion, four hundred twelve billion, seven hundred eighty-one million, two hundred eighty-seven thousand, seven hundred fifty-one".