163144052633557 has 2 divisors, whose sum is σ = 163144052633558. Its totient is φ = 163144052633556.

The previous prime is 163144052633539. The next prime is 163144052633657. The reversal of 163144052633557 is 755336250441361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159427643649156 + 3716408984401 = 12626466^2 + 1927799^2 .

It is an emirp because it is prime and its reverse (755336250441361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163144052633557 - 2¹¹ = 163144052631509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163144052633498 and 163144052633507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163144052633657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81572026316778 + 81572026316779.

It is an arithmetic number, because the mean of its divisors is an integer number (81572026316779).

Almost surely, 2^{163144052633557} is an apocalyptic number.

It is an amenable number.

163144052633557 is a deficient number, since it is larger than the sum of its proper divisors (1).

163144052633557 is an equidigital number, since it uses as much as digits as its factorization.

163144052633557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216000, while the sum is 55.

The spelling of 163144052633557 in words is "one hundred sixty-three trillion, one hundred forty-four billion, fifty-two million, six hundred thirty-three thousand, five hundred fifty-seven".