123320780827 has 2 divisors, whose sum is σ = 123320780828. Its totient is φ = 123320780826.

The previous prime is 123320780819. The next prime is 123320780831. The reversal of 123320780827 is 728087023321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123320780827 - 2³ = 123320780819 is a prime.

It is not a weakly prime, because it can be changed into another prime (123320780857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61660390413 + 61660390414.

It is an arithmetic number, because the mean of its divisors is an integer number (61660390414).

Almost surely, 2^123320780827 is an apocalyptic number.

123320780827 is a deficient number, since it is larger than the sum of its proper divisors (1).

123320780827 is an equidigital number, since it uses as much as digits as its factorization.

123320780827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 123320780827 in words is "one hundred twenty-three billion, three hundred twenty million, seven hundred eighty thousand, eight hundred twenty-seven".