155006505011165 has 24 divisors (see below), whose sum is σ = 195281259558840. Its totient is φ = 118104601370624.

The previous prime is 155006505011159. The next prime is 155006505011221. The reversal of 155006505011165 is 561110505600551.

It can be written as a sum of positive squares in 4 ways, for example, as 18052802801881 + 136953702209284 = 4248859^2 + 11702722^2 .

It is not a de Polignac number, because 155006505011165 - 2⁸ = 155006505010909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125142500 + ... + 126375069.

It is an arithmetic number, because the mean of its divisors is an integer number (8136719148285).

Almost surely, 2^{155006505011165} is an apocalyptic number.

It is an amenable number.

155006505011165 is a deficient number, since it is larger than the sum of its proper divisors (40274754547675).

155006505011165 is a wasteful number, since it uses less digits than its factorization.

155006505011165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251517853 (or 251517830 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 41.

The spelling of 155006505011165 in words is "one hundred fifty-five trillion, six billion, five hundred five million, eleven thousand, one hundred sixty-five".