1155373627321 has 2 divisors, whose sum is σ = 1155373627322. Its totient is φ = 1155373627320.

The previous prime is 1155373627307. The next prime is 1155373627381. The reversal of 1155373627321 is 1237263735511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1152539662096 + 2833965225 = 1073564^2 + 53235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1155373627321 - 2²¹ = 1155371530169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1155373627381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577686813660 + 577686813661.

It is an arithmetic number, because the mean of its divisors is an integer number (577686813661).

Almost surely, 2^{1155373627321} is an apocalyptic number.

It is an amenable number.

1155373627321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155373627321 is an equidigital number, since it uses as much as digits as its factorization.

1155373627321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793800, while the sum is 46.

The spelling of 1155373627321 in words is "one trillion, one hundred fifty-five billion, three hundred seventy-three million, six hundred twenty-seven thousand, three hundred twenty-one".