1155346428281 has 2 divisors, whose sum is σ = 1155346428282. Its totient is φ = 1155346428280.

The previous prime is 1155346428259. The next prime is 1155346428323. The reversal of 1155346428281 is 1828246435511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 912198818281 + 243147610000 = 955091^2 + 493100^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155346428281 - 2²⁶ = 1155279319417 is a prime.

It is a super-2 number, since 2×1155346428281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1155346428581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577673214140 + 577673214141.

It is an arithmetic number, because the mean of its divisors is an integer number (577673214141).

Almost surely, 2^{1155346428281} is an apocalyptic number.

It is an amenable number.

1155346428281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155346428281 is an equidigital number, since it uses as much as digits as its factorization.

1155346428281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1843200, while the sum is 50.

The spelling of 1155346428281 in words is "one trillion, one hundred fifty-five billion, three hundred forty-six million, four hundred twenty-eight thousand, two hundred eighty-one".