6665161155 has 8 divisors (see below), whose sum is σ = 10664257872. Its totient is φ = 3554752608.

The previous prime is 6665161127. The next prime is 6665161159. The reversal of 6665161155 is 5511615666.

6665161155 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6665161155 - 2⁸ = 6665160899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6665161159) 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, 222172024 + ... + 222172053.

It is an arithmetic number, because the mean of its divisors is an integer number (1333032234).

Almost surely, 2^6665161155 is an apocalyptic number.

6665161155 is a deficient number, since it is larger than the sum of its proper divisors (3999096717).

6665161155 is a wasteful number, since it uses less digits than its factorization.

6665161155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444344085.

The product of its digits is 162000, while the sum is 42.

The square root of 6665161155 is about 81640.4382337577. The cubic root of 6665161155 is about 1881.9303730241.

The spelling of 6665161155 in words is "six billion, six hundred sixty-five million, one hundred sixty-one thousand, one hundred fifty-five".