163707726253 has 2 divisors, whose sum is σ = 163707726254. Its totient is φ = 163707726252.

The previous prime is 163707726251. The next prime is 163707726257. The reversal of 163707726253 is 352627707361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145201388809 + 18506337444 = 381053^2 + 136038^2 .

It is a cyclic number.

It is not a de Polignac number, because 163707726253 - 2¹ = 163707726251 is a prime.

Together with 163707726251, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 163707726197 and 163707726206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163707726251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81853863126 + 81853863127.

It is an arithmetic number, because the mean of its divisors is an integer number (81853863127).

Almost surely, 2^163707726253 is an apocalyptic number.

It is an amenable number.

163707726253 is a deficient number, since it is larger than the sum of its proper divisors (1).

163707726253 is an equidigital number, since it uses as much as digits as its factorization.

163707726253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2222640, while the sum is 49.

The spelling of 163707726253 in words is "one hundred sixty-three billion, seven hundred seven million, seven hundred twenty-six thousand, two hundred fifty-three".