155335555231 has 4 divisors (see below), whose sum is σ = 155355739000. Its totient is φ = 155315371464.

The previous prime is 155335555223. The next prime is 155335555267. The reversal of 155335555231 is 132555533551.

155335555231 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.

It is a cyclic number.

It is not a de Polignac number, because 155335555231 - 2³ = 155335555223 is a prime.

It is a super-2 number, since 2×155335555231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155335555031) 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 3 ways as a sum of consecutive naturals, for example, 10080336 + ... + 10095733.

It is an arithmetic number, because the mean of its divisors is an integer number (38838934750).

Almost surely, 2^155335555231 is an apocalyptic number.

155335555231 is a deficient number, since it is larger than the sum of its proper divisors (20183769).

155335555231 is an equidigital number, since it uses as much as digits as its factorization.

155335555231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20183768.

The product of its digits is 843750, while the sum is 43.

The spelling of 155335555231 in words is "one hundred fifty-five billion, three hundred thirty-five million, five hundred fifty-five thousand, two hundred thirty-one".