155121241140413 has 2 divisors, whose sum is σ = 155121241140414. Its totient is φ = 155121241140412.

The previous prime is 155121241140407. The next prime is 155121241140451. The reversal of 155121241140413 is 314041142121551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144409779111844 + 10711462028569 = 12017062^2 + 3272837^2 .

It is a cyclic number.

It is not a de Polignac number, because 155121241140413 - 2¹⁸ = 155121240878269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155121241140403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77560620570206 + 77560620570207.

It is an arithmetic number, because the mean of its divisors is an integer number (77560620570207).

Almost surely, 2^{155121241140413} is an apocalyptic number.

It is an amenable number.

155121241140413 is a deficient number, since it is larger than the sum of its proper divisors (1).

155121241140413 is an equidigital number, since it uses as much as digits as its factorization.

155121241140413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 35.

Adding to 155121241140413 its reverse (314041142121551), we get a palindrome (469162383261964).

The spelling of 155121241140413 in words is "one hundred fifty-five trillion, one hundred twenty-one billion, two hundred forty-one million, one hundred forty thousand, four hundred thirteen".