163689926047 has 2 divisors, whose sum is σ = 163689926048. Its totient is φ = 163689926046.

The previous prime is 163689926041. The next prime is 163689926171. The reversal of 163689926047 is 740629986361.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163689926047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163689926041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81844963023 + 81844963024.

It is an arithmetic number, because the mean of its divisors is an integer number (81844963024).

Almost surely, 2^163689926047 is an apocalyptic number.

163689926047 is a deficient number, since it is larger than the sum of its proper divisors (1).

163689926047 is an equidigital number, since it uses as much as digits as its factorization.

163689926047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23514624, while the sum is 61.

The spelling of 163689926047 in words is "one hundred sixty-three billion, six hundred eighty-nine million, nine hundred twenty-six thousand, forty-seven".