12405544000424 has 8 divisors (see below), whose sum is σ = 23260395000810. Its totient is φ = 6202772000208.

The previous prime is 12405544000327. The next prime is 12405544000517. The reversal of 12405544000424 is 42400044550421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12135956668900 + 269587331524 = 3483670^2 + 519218^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775346500019 + ... + 775346500034.

Almost surely, 2^{12405544000424} is an apocalyptic number.

It is an amenable number.

12405544000424 is a deficient number, since it is larger than the sum of its proper divisors (10854851000386).

12405544000424 is a wasteful number, since it uses less digits than its factorization.

12405544000424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550693000059 (or 1550693000055 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 35.

Adding to 12405544000424 its reverse (42400044550421), we get a palindrome (54805588550845).

The spelling of 12405544000424 in words is "twelve trillion, four hundred five billion, five hundred forty-four million, four hundred twenty-four", and thus it is an aban number.