123905734385663 has 8 divisors (see below), whose sum is σ = 127000173451440. Its totient is φ = 120847915900800.

The previous prime is 123905734385611. The next prime is 123905734385687. The reversal of 123905734385663 is 366583437509321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123905734385663 - 2¹⁰ = 123905734384639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123905734385663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123905734385063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9155138378 + ... + 9155151911.

It is an arithmetic number, because the mean of its divisors is an integer number (15875021681430).

It is a 1-persistent number, because it is pandigital, but 2⋅123905734385663 = 247811468771326 is not.

Almost surely, 2^{123905734385663} is an apocalyptic number.

123905734385663 is a deficient number, since it is larger than the sum of its proper divisors (3094439065777).

123905734385663 is a wasteful number, since it uses less digits than its factorization.

123905734385663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310290457.

The product of its (nonzero) digits is 293932800, while the sum is 65.

The spelling of 123905734385663 in words is "one hundred twenty-three trillion, nine hundred five billion, seven hundred thirty-four million, three hundred eighty-five thousand, six hundred sixty-three".