155045215441 has 2 divisors, whose sum is σ = 155045215442. Its totient is φ = 155045215440.

The previous prime is 155045215439. The next prime is 155045215471. The reversal of 155045215441 is 144512540551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143941324816 + 11103890625 = 379396^2 + 105375^2 .

It is a cyclic number.

It is not a de Polignac number, because 155045215441 - 2¹ = 155045215439 is a prime.

It is a super-3 number, since 3×155045215441³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 155045215439, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 155045215441.

It is not a weakly prime, because it can be changed into another prime (155045215471) 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 as a sum of consecutive naturals, namely, 77522607720 + 77522607721.

It is an arithmetic number, because the mean of its divisors is an integer number (77522607721).

Almost surely, 2^155045215441 is an apocalyptic number.

It is an amenable number.

155045215441 is a deficient number, since it is larger than the sum of its proper divisors (1).

155045215441 is an equidigital number, since it uses as much as digits as its factorization.

155045215441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80000, while the sum is 37.

Adding to 155045215441 its reverse (144512540551), we get a palindrome (299557755992).

The spelling of 155045215441 in words is "one hundred fifty-five billion, forty-five million, two hundred fifteen thousand, four hundred forty-one".