123220892838689 has 2 divisors, whose sum is σ = 123220892838690. Its totient is φ = 123220892838688.

The previous prime is 123220892838679. The next prime is 123220892838727. The reversal of 123220892838689 is 986838298022321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68632807698064 + 54588085140625 = 8284492^2 + 7388375^2 .

It is a cyclic number.

It is not a de Polignac number, because 123220892838689 - 2¹² = 123220892834593 is a prime.

It is not a weakly prime, because it can be changed into another prime (123220892838679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61610446419344 + 61610446419345.

It is an arithmetic number, because the mean of its divisors is an integer number (61610446419345).

Almost surely, 2^{123220892838689} is an apocalyptic number.

It is an amenable number.

123220892838689 is a deficient number, since it is larger than the sum of its proper divisors (1).

123220892838689 is an equidigital number, since it uses as much as digits as its factorization.

123220892838689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 286654464, while the sum is 71.

The spelling of 123220892838689 in words is "one hundred twenty-three trillion, two hundred twenty billion, eight hundred ninety-two million, eight hundred thirty-eight thousand, six hundred eighty-nine".