1123840651393 has 2 divisors, whose sum is σ = 1123840651394. Its totient is φ = 1123840651392.

The previous prime is 1123840651333. The next prime is 1123840651397. The reversal of 1123840651393 is 3931560483211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 882186805504 + 241653845889 = 939248^2 + 491583^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123840651393 - 2¹³ = 1123840643201 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123840651397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561920325696 + 561920325697.

It is an arithmetic number, because the mean of its divisors is an integer number (561920325697).

Almost surely, 2^{1123840651393} is an apocalyptic number.

It is an amenable number.

1123840651393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123840651393 is an equidigital number, since it uses as much as digits as its factorization.

1123840651393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 1123840651393 in words is "one trillion, one hundred twenty-three billion, eight hundred forty million, six hundred fifty-one thousand, three hundred ninety-three".