123684443863 has 2 divisors, whose sum is σ = 123684443864. Its totient is φ = 123684443862.

The previous prime is 123684443837. The next prime is 123684443951. The reversal of 123684443863 is 368344486321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123684443863 - 2¹³ = 123684435671 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123684443863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123684243863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61842221931 + 61842221932.

It is an arithmetic number, because the mean of its divisors is an integer number (61842221932).

Almost surely, 2^123684443863 is an apocalyptic number.

123684443863 is a deficient number, since it is larger than the sum of its proper divisors (1).

123684443863 is an equidigital number, since it uses as much as digits as its factorization.

123684443863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7962624, while the sum is 52.

The spelling of 123684443863 in words is "one hundred twenty-three billion, six hundred eighty-four million, four hundred forty-three thousand, eight hundred sixty-three".