253663162165 has 16 divisors (see below), whose sum is σ = 347889519360. Its totient is φ = 173936148480.

The previous prime is 253663162163. The next prime is 253663162187. The reversal of 253663162165 is 561261366352.

It is not a de Polignac number, because 253663162165 - 2¹ = 253663162163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253663162163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2091456 + ... + 2209414.

It is an arithmetic number, because the mean of its divisors is an integer number (21743094960).

Almost surely, 2^253663162165 is an apocalyptic number.

It is an amenable number.

253663162165 is a deficient number, since it is larger than the sum of its proper divisors (94226357195).

253663162165 is a wasteful number, since it uses less digits than its factorization.

253663162165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179412.

The product of its digits is 1166400, while the sum is 46.

The spelling of 253663162165 in words is "two hundred fifty-three billion, six hundred sixty-three million, one hundred sixty-two thousand, one hundred sixty-five".