123166003455 has 144 divisors (see below), whose sum is σ = 240767759232. Its totient is φ = 58174617600.

The previous prime is 123166003393. The next prime is 123166003463. The reversal of 123166003455 is 554300661321.

123166003455 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 6 + 600 + 3 + 45 + 5 = 666.

It is not a de Polignac number, because 123166003455 - 2¹⁰ = 123166002431 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 61674517 + ... + 61676513.

It is an arithmetic number, because the mean of its divisors is an integer number (1671998328).

Almost surely, 2^123166003455 is an apocalyptic number.

123166003455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123166003455 is a deficient number, since it is larger than the sum of its proper divisors (117601755777).

123166003455 is a wasteful number, since it uses less digits than its factorization.

123166003455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318 (or 2304 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 123166003455 its reverse (554300661321), we get a palindrome (677466664776).

The spelling of 123166003455 in words is "one hundred twenty-three billion, one hundred sixty-six million, three thousand, four hundred fifty-five".