8163688474031 has 2 divisors, whose sum is σ = 8163688474032. Its totient is φ = 8163688474030.

The previous prime is 8163688474001. The next prime is 8163688474063. The reversal of 8163688474031 is 1304748863618.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8163688474031 is a prime.

It is a super-2 number, since 2×8163688474031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8163688474001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4081844237015 + 4081844237016.

It is an arithmetic number, because the mean of its divisors is an integer number (4081844237016).

Almost surely, 2^{8163688474031} is an apocalyptic number.

8163688474031 is a deficient number, since it is larger than the sum of its proper divisors (1).

8163688474031 is an equidigital number, since it uses as much as digits as its factorization.

8163688474031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 8163688474031 in words is "eight trillion, one hundred sixty-three billion, six hundred eighty-eight million, four hundred seventy-four thousand, thirty-one".