235665440166 has 32 divisors (see below), whose sum is σ = 513290342880. Its totient is φ = 71697694464.

The previous prime is 235665440159. The next prime is 235665440183. The reversal of 235665440166 is 661044566532.

It is a super-2 number, since 2×235665440166² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16966945 + ... + 16980828.

It is an arithmetic number, because the mean of its divisors is an integer number (16040323215).

Almost surely, 2^235665440166 is an apocalyptic number.

235665440166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

235665440166 is an abundant number, since it is smaller than the sum of its proper divisors (277624902714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

235665440166 is a wasteful number, since it uses less digits than its factorization.

235665440166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33947880.

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 235665440166 in words is "two hundred thirty-five billion, six hundred sixty-five million, four hundred forty thousand, one hundred sixty-six".