155430320413 has 2 divisors, whose sum is σ = 155430320414. Its totient is φ = 155430320412.

The previous prime is 155430320377. The next prime is 155430320473. The reversal of 155430320413 is 314023034551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126111634884 + 29318685529 = 355122^2 + 171227^2 .

It is a cyclic number.

It is not a de Polignac number, because 155430320413 - 2²¹ = 155428223261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155430320473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77715160206 + 77715160207.

It is an arithmetic number, because the mean of its divisors is an integer number (77715160207).

Almost surely, 2^155430320413 is an apocalyptic number.

It is an amenable number.

155430320413 is a deficient number, since it is larger than the sum of its proper divisors (1).

155430320413 is an equidigital number, since it uses as much as digits as its factorization.

155430320413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 155430320413 its reverse (314023034551), we get a palindrome (469453354964).

The spelling of 155430320413 in words is "one hundred fifty-five billion, four hundred thirty million, three hundred twenty thousand, four hundred thirteen".