155443040201 has 2 divisors, whose sum is σ = 155443040202. Its totient is φ = 155443040200.

The previous prime is 155443040177. The next prime is 155443040227. The reversal of 155443040201 is 102040344551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149209148176 + 6233892025 = 386276^2 + 78955^2 .

It is an emirp because it is prime and its reverse (102040344551) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155443040201 is a prime.

It is not a weakly prime, because it can be changed into another prime (155443040281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77721520100 + 77721520101.

It is an arithmetic number, because the mean of its divisors is an integer number (77721520101).

Almost surely, 2^155443040201 is an apocalyptic number.

It is an amenable number.

155443040201 is a deficient number, since it is larger than the sum of its proper divisors (1).

155443040201 is an equidigital number, since it uses as much as digits as its factorization.

155443040201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 155443040201 its reverse (102040344551), we get a palindrome (257483384752).

The spelling of 155443040201 in words is "one hundred fifty-five billion, four hundred forty-three million, forty thousand, two hundred one".