1097780745623 has 2 divisors, whose sum is σ = 1097780745624. Its totient is φ = 1097780745622.

The previous prime is 1097780745539. The next prime is 1097780745637. The reversal of 1097780745623 is 3265470877901.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1097780745623 - 2¹⁴ = 1097780729239 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1097780745023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548890372811 + 548890372812.

It is an arithmetic number, because the mean of its divisors is an integer number (548890372812).

It is a 1-persistent number, because it is pandigital, but 2⋅1097780745623 = 2195561491246 is not.

Almost surely, 2^{1097780745623} is an apocalyptic number.

1097780745623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097780745623 is an equidigital number, since it uses as much as digits as its factorization.

1097780745623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17781120, while the sum is 59.

The spelling of 1097780745623 in words is "one trillion, ninety-seven billion, seven hundred eighty million, seven hundred forty-five thousand, six hundred twenty-three".