155555343655 has 32 divisors (see below), whose sum is σ = 189445132800. Its totient is φ = 122609712000.

The previous prime is 155555343589. The next prime is 155555343659. The reversal of 155555343655 is 556343555551.

155555343655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155555343655 - 2²¹ = 155553246503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155555343659) 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 31 ways as a sum of consecutive naturals, for example, 49178104 + ... + 49181266.

It is an arithmetic number, because the mean of its divisors is an integer number (5920160400).

Almost surely, 2^155555343655 is an apocalyptic number.

155555343655 is a deficient number, since it is larger than the sum of its proper divisors (33889789145).

155555343655 is a wasteful number, since it uses less digits than its factorization.

155555343655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831.

The product of its digits is 16875000, while the sum is 52.

The spelling of 155555343655 in words is "one hundred fifty-five billion, five hundred fifty-five million, three hundred forty-three thousand, six hundred fifty-five".