163624557073 has 2 divisors, whose sum is σ = 163624557074. Its totient is φ = 163624557072.

The previous prime is 163624557037. The next prime is 163624557077. The reversal of 163624557073 is 370755426361.

Together with previous prime (163624557037) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149446415889 + 14178141184 = 386583^2 + 119072^2 .

It is a cyclic number.

It is not a de Polignac number, because 163624557073 - 2²¹ = 163622459921 is a prime.

It is not a weakly prime, because it can be changed into another prime (163624557077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81812278536 + 81812278537.

It is an arithmetic number, because the mean of its divisors is an integer number (81812278537).

Almost surely, 2^163624557073 is an apocalyptic number.

It is an amenable number.

163624557073 is a deficient number, since it is larger than the sum of its proper divisors (1).

163624557073 is an equidigital number, since it uses as much as digits as its factorization.

163624557073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 49.

The spelling of 163624557073 in words is "one hundred sixty-three billion, six hundred twenty-four million, five hundred fifty-seven thousand, seventy-three".