163235311765 has 8 divisors (see below), whose sum is σ = 196550916408. Its totient is φ = 130142554560.

The previous prime is 163235311717. The next prime is 163235311769. The reversal of 163235311765 is 567113532361.

It can be written as a sum of positive squares in 4 ways, for example, as 43949348881 + 119285962884 = 209641^2 + 345378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163235311765 - 2²⁵ = 163201757333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163235311769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55710246 + ... + 55713175.

It is an arithmetic number, because the mean of its divisors is an integer number (24568864551).

Almost surely, 2^163235311765 is an apocalyptic number.

It is an amenable number.

163235311765 is a deficient number, since it is larger than the sum of its proper divisors (33315604643).

163235311765 is a wasteful number, since it uses less digits than its factorization.

163235311765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111423719.

The product of its digits is 340200, while the sum is 43.

The spelling of 163235311765 in words is "one hundred sixty-three billion, two hundred thirty-five million, three hundred eleven thousand, seven hundred sixty-five".