155656560555165 has 32 divisors (see below), whose sum is σ = 262159266286080. Its totient is φ = 78647270780736.

The previous prime is 155656560555049. The next prime is 155656560555169. The reversal of 155656560555165 is 561555065656551.

It is not a de Polignac number, because 155656560555165 - 2⁷ = 155656560555037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155656560555096 and 155656560555105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155656560555169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113042914 + ... + 114411596.

It is an arithmetic number, because the mean of its divisors is an integer number (8192477071440).

Almost surely, 2^{155656560555165} is an apocalyptic number.

155656560555165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155656560555165 is a deficient number, since it is larger than the sum of its proper divisors (106502705730915).

155656560555165 is a wasteful number, since it uses less digits than its factorization.

155656560555165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767753.

The product of its (nonzero) digits is 506250000, while the sum is 66.

The spelling of 155656560555165 in words is "one hundred fifty-five trillion, six hundred fifty-six billion, five hundred sixty million, five hundred fifty-five thousand, one hundred sixty-five".