123214541311665 has 24 divisors (see below), whose sum is σ = 213572524763520. Its totient is φ = 65714221061664.

The previous prime is 123214541311639. The next prime is 123214541311703. The reversal of 123214541311665 is 566113145412321.

123214541311665 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 1 + 4 + 541 + 31 + 16 + 65 = 666.

It is not a de Polignac number, because 123214541311665 - 2¹⁴ = 123214541295281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 123214541311665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11322184 + ... + 19355126.

It is an arithmetic number, because the mean of its divisors is an integer number (8898855198480).

Almost surely, 2^{123214541311665} is an apocalyptic number.

123214541311665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123214541311665 is a deficient number, since it is larger than the sum of its proper divisors (90357983451855).

123214541311665 is a wasteful number, since it uses less digits than its factorization.

123214541311665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8373813 (or 8373810 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

Adding to 123214541311665 its reverse (566113145412321), we get a palindrome (689327686723986).

The spelling of 123214541311665 in words is "one hundred twenty-three trillion, two hundred fourteen billion, five hundred forty-one million, three hundred eleven thousand, six hundred sixty-five".