4165333661 has 4 divisors (see below), whose sum is σ = 4176683712. Its totient is φ = 4153983612.

The previous prime is 4165333609. The next prime is 4165333673. The reversal of 4165333661 is 1663335614.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4165333661 - 2¹⁸ = 4165071517 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 (4165333261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5674475 + ... + 5675208.

It is an arithmetic number, because the mean of its divisors is an integer number (1044170928).

Almost surely, 2^4165333661 is an apocalyptic number.

It is an amenable number.

4165333661 is a deficient number, since it is larger than the sum of its proper divisors (11350051).

4165333661 is a wasteful number, since it uses less digits than its factorization.

4165333661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11350050.

The product of its digits is 116640, while the sum is 38.

The square root of 4165333661 is about 64539.3961933330. The cubic root of 4165333661 is about 1608.9773556638.

The spelling of 4165333661 in words is "four billion, one hundred sixty-five million, three hundred thirty-three thousand, six hundred sixty-one".