155423240211 has 4 divisors (see below), whose sum is σ = 207230986952. Its totient is φ = 103615493472.

The previous prime is 155423240201. The next prime is 155423240243. The reversal of 155423240211 is 112042324551.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 155423240211 - 2⁷ = 155423240083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155423240201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25903873366 + ... + 25903873371.

It is an arithmetic number, because the mean of its divisors is an integer number (51807746738).

Almost surely, 2^155423240211 is an apocalyptic number.

155423240211 is a deficient number, since it is larger than the sum of its proper divisors (51807746741).

155423240211 is an equidigital number, since it uses as much as digits as its factorization.

155423240211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51807746740.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 155423240211 its reverse (112042324551), we get a palindrome (267465564762).

The spelling of 155423240211 in words is "one hundred fifty-five billion, four hundred twenty-three million, two hundred forty thousand, two hundred eleven".