155441403427 has 2 divisors, whose sum is σ = 155441403428. Its totient is φ = 155441403426.

The previous prime is 155441403373. The next prime is 155441403431. The reversal of 155441403427 is 724304144551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155441403427 - 2³⁵ = 121081665059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155441403427.

It is not a weakly prime, because it can be changed into another prime (155441403527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77720701713 + 77720701714.

It is an arithmetic number, because the mean of its divisors is an integer number (77720701714).

Almost surely, 2^155441403427 is an apocalyptic number.

155441403427 is a deficient number, since it is larger than the sum of its proper divisors (1).

155441403427 is an equidigital number, since it uses as much as digits as its factorization.

155441403427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 40.

Adding to 155441403427 its reverse (724304144551), we get a palindrome (879745547978).

The spelling of 155441403427 in words is "one hundred fifty-five billion, four hundred forty-one million, four hundred three thousand, four hundred twenty-seven".