123663424252405 has 16 divisors (see below), whose sum is σ = 148445086852080. Its totient is φ = 98898090213888.

The previous prime is 123663424252367. The next prime is 123663424252409. The reversal of 123663424252405 is 504252424366321.

It can be written as a sum of positive squares in 8 ways, for example, as 15869339845956 + 107794084406449 = 3983634^2 + 10382393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123663424252405 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123663424252409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406618179 + ... + 406922191.

It is an arithmetic number, because the mean of its divisors is an integer number (9277817928255).

Almost surely, 2^{123663424252405} is an apocalyptic number.

It is an amenable number.

123663424252405 is a deficient number, since it is larger than the sum of its proper divisors (24781662599675).

123663424252405 is a wasteful number, since it uses less digits than its factorization.

123663424252405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330600.

The product of its (nonzero) digits is 8294400, while the sum is 49.

The spelling of 123663424252405 in words is "one hundred twenty-three trillion, six hundred sixty-three billion, four hundred twenty-four million, two hundred fifty-two thousand, four hundred five".