155112066165 has 16 divisors (see below), whose sum is σ = 283633492608. Its totient is φ = 70908373056.

The previous prime is 155112066163. The next prime is 155112066199. The reversal of 155112066165 is 561660211551.

It is not a de Polignac number, because 155112066165 - 2¹ = 155112066163 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155112066163) 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, 738628782 + ... + 738628991.

It is an arithmetic number, because the mean of its divisors is an integer number (17727093288).

Almost surely, 2^155112066165 is an apocalyptic number.

155112066165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155112066165 is a deficient number, since it is larger than the sum of its proper divisors (128521426443).

155112066165 is a wasteful number, since it uses less digits than its factorization.

155112066165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477257788.

The product of its (nonzero) digits is 54000, while the sum is 39.

The spelling of 155112066165 in words is "one hundred fifty-five billion, one hundred twelve million, sixty-six thousand, one hundred sixty-five".