1091064428263 has 2 divisors, whose sum is σ = 1091064428264. Its totient is φ = 1091064428262.

The previous prime is 1091064428239. The next prime is 1091064428291. The reversal of 1091064428263 is 3628244601901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1091064428263 - 2⁹ = 1091064427751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1091064428203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545532214131 + 545532214132.

It is an arithmetic number, because the mean of its divisors is an integer number (545532214132).

Almost surely, 2^{1091064428263} is an apocalyptic number.

1091064428263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091064428263 is an equidigital number, since it uses as much as digits as its factorization.

1091064428263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 46.

The spelling of 1091064428263 in words is "one trillion, ninety-one billion, sixty-four million, four hundred twenty-eight thousand, two hundred sixty-three".