12366342621 has 12 divisors (see below), whose sum is σ = 17864961660. Its totient is φ = 8243089920.

The previous prime is 12366342619. The next prime is 12366342643. The reversal of 12366342621 is 12624366321.

12366342621 is a `hidden beast` number, since 1 + 2 + 366 + 34 + 262 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1535777721 + 10830564900 = 39189^2 + 104070^2 .

It is not a de Polignac number, because 12366342621 - 2¹ = 12366342619 is a prime.

It is a super-2 number, since 2×12366342621² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12366342601) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 23236 + ... + 158973.

It is an arithmetic number, because the mean of its divisors is an integer number (1488746805).

Almost surely, 2^12366342621 is an apocalyptic number.

It is an amenable number.

12366342621 is a deficient number, since it is larger than the sum of its proper divisors (5498619039).

12366342621 is a wasteful number, since it uses less digits than its factorization.

12366342621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189756 (or 189753 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The spelling of 12366342621 in words is "twelve billion, three hundred sixty-six million, three hundred forty-two thousand, six hundred twenty-one".