123207661683643 has 2 divisors, whose sum is σ = 123207661683644. Its totient is φ = 123207661683642.

The previous prime is 123207661683641. The next prime is 123207661683683. The reversal of 123207661683643 is 346386166702321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123207661683643 - 2¹ = 123207661683641 is a prime.

Together with 123207661683641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123207661683641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61603830841821 + 61603830841822.

It is an arithmetic number, because the mean of its divisors is an integer number (61603830841822).

Almost surely, 2^{123207661683643} is an apocalyptic number.

123207661683643 is a deficient number, since it is larger than the sum of its proper divisors (1).

123207661683643 is an equidigital number, since it uses as much as digits as its factorization.

123207661683643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31352832, while the sum is 58.

The spelling of 123207661683643 in words is "one hundred twenty-three trillion, two hundred seven billion, six hundred sixty-one million, six hundred eighty-three thousand, six hundred forty-three".