155065165655 has 4 divisors (see below), whose sum is σ = 186078198792. Its totient is φ = 124052132520.

The previous prime is 155065165643. The next prime is 155065165663. The reversal of 155065165655 is 556561560551.

155065165655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556561560551 = 59 ⋅9433246789.

It is not a de Polignac number, because 155065165655 - 2¹⁶ = 155065100119 is a prime.

It is a super-2 number, since 2×155065165655² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15506516561 + ... + 15506516570.

It is an arithmetic number, because the mean of its divisors is an integer number (46519549698).

Almost surely, 2^155065165655 is an apocalyptic number.

155065165655 is a deficient number, since it is larger than the sum of its proper divisors (31013033137).

155065165655 is an equidigital number, since it uses as much as digits as its factorization.

155065165655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31013033136.

The product of its (nonzero) digits is 3375000, while the sum is 50.

The spelling of 155065165655 in words is "one hundred fifty-five billion, sixty-five million, one hundred sixty-five thousand, six hundred fifty-five".