155074235243 has 4 divisors (see below), whose sum is σ = 155390069208. Its totient is φ = 154758401280.

The previous prime is 155074235227. The next prime is 155074235249. The reversal of 155074235243 is 342532470551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342532470551 = 97 ⋅3531262583.

It is a cyclic number.

It is not a de Polignac number, because 155074235243 - 2⁴ = 155074235227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155074235243.

It is not an unprimeable number, because it can be changed into a prime (155074235249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157916246 + ... + 157917227.

It is an arithmetic number, because the mean of its divisors is an integer number (38847517302).

Almost surely, 2^155074235243 is an apocalyptic number.

155074235243 is a deficient number, since it is larger than the sum of its proper divisors (315833965).

155074235243 is an equidigital number, since it uses as much as digits as its factorization.

155074235243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315833964.

The product of its (nonzero) digits is 504000, while the sum is 41.

The spelling of 155074235243 in words is "one hundred fifty-five billion, seventy-four million, two hundred thirty-five thousand, two hundred forty-three".