163574661973 has 2 divisors, whose sum is σ = 163574661974. Its totient is φ = 163574661972.

The previous prime is 163574661959. The next prime is 163574662019. The reversal of 163574661973 is 379166475361.

163574661973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138426411249 + 25148250724 = 372057^2 + 158582^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163574661973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163574661953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81787330986 + 81787330987.

It is an arithmetic number, because the mean of its divisors is an integer number (81787330987).

Almost surely, 2^163574661973 is an apocalyptic number.

It is an amenable number.

163574661973 is a deficient number, since it is larger than the sum of its proper divisors (1).

163574661973 is an equidigital number, since it uses as much as digits as its factorization.

163574661973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17146080, while the sum is 58.

The spelling of 163574661973 in words is "one hundred sixty-three billion, five hundred seventy-four million, six hundred sixty-one thousand, nine hundred seventy-three".