163713821023 has 2 divisors, whose sum is σ = 163713821024. Its totient is φ = 163713821022.

The previous prime is 163713821003. The next prime is 163713821087. The reversal of 163713821023 is 320128317361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163713821023 - 2²¹ = 163711723871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163713821003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81856910511 + 81856910512.

It is an arithmetic number, because the mean of its divisors is an integer number (81856910512).

Almost surely, 2^163713821023 is an apocalyptic number.

163713821023 is a deficient number, since it is larger than the sum of its proper divisors (1).

163713821023 is an equidigital number, since it uses as much as digits as its factorization.

163713821023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 163713821023 in words is "one hundred sixty-three billion, seven hundred thirteen million, eight hundred twenty-one thousand, twenty-three".