155441545422242 has 4 divisors (see below), whose sum is σ = 233162318133366. Its totient is φ = 77720772711120.

The previous prime is 155441545422223. The next prime is 155441545422257. The reversal of 155441545422242 is 242224545144551.

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

It can be written as a sum of positive squares in only one way, i.e., 147360880714441 + 8080664707801 = 12139229^2 + 2842651^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38860386355559 + ... + 38860386355562.

Almost surely, 2^{155441545422242} is an apocalyptic number.

155441545422242 is a deficient number, since it is larger than the sum of its proper divisors (77720772711124).

155441545422242 is an equidigital number, since it uses as much as digits as its factorization.

155441545422242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77720772711123.

The product of its digits is 10240000, while the sum is 50.

The spelling of 155441545422242 in words is "one hundred fifty-five trillion, four hundred forty-one billion, five hundred forty-five million, four hundred twenty-two thousand, two hundred forty-two".