155401335203 has 2 divisors, whose sum is σ = 155401335204. Its totient is φ = 155401335202.

The previous prime is 155401335197. The next prime is 155401335227. The reversal of 155401335203 is 302533104551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155401335203 - 2¹⁸ = 155401073059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155401335203.

It is not a weakly prime, because it can be changed into another prime (155401334203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77700667601 + 77700667602.

It is an arithmetic number, because the mean of its divisors is an integer number (77700667602).

Almost surely, 2^155401335203 is an apocalyptic number.

155401335203 is a deficient number, since it is larger than the sum of its proper divisors (1).

155401335203 is an equidigital number, since it uses as much as digits as its factorization.

155401335203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 155401335203 its reverse (302533104551), we get a palindrome (457934439754).

The spelling of 155401335203 in words is "one hundred fifty-five billion, four hundred one million, three hundred thirty-five thousand, two hundred three".