155855384405 has 8 divisors (see below), whose sum is σ = 213744527232. Its totient is φ = 106872263568.

The previous prime is 155855384401. The next prime is 155855384431. The reversal of 155855384405 is 504483558551.

155855384405 is digitally balanced in base 2, 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 155855384405 - 2² = 155855384401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155855384401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2226505457 + ... + 2226505526.

It is an arithmetic number, because the mean of its divisors is an integer number (26718065904).

Almost surely, 2^155855384405 is an apocalyptic number.

It is an amenable number.

155855384405 is a deficient number, since it is larger than the sum of its proper divisors (57889142827).

155855384405 is an equidigital number, since it uses as much as digits as its factorization.

155855384405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453010995.

The product of its (nonzero) digits is 9600000, while the sum is 53.

The spelling of 155855384405 in words is "one hundred fifty-five billion, eight hundred fifty-five million, three hundred eighty-four thousand, four hundred five".