12400050023505 has 96 divisors (see below), whose sum is σ = 23551933260960. Its totient is φ = 6007295508480.

The previous prime is 12400050023483. The next prime is 12400050023513. The reversal of 12400050023505 is 50532005000421.

It is a happy number.

12400050023505 is a `hidden beast` number, since 124 + 0 + 0 + 0 + 500 + 2 + 35 + 0 + 5 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 4062272498064 + 8337777525441 = 2015508^2 + 2887521^2 .

It is not a de Polignac number, because 12400050023505 - 2⁷ = 12400050023377 is a prime.

It is a super-2 number, since 2×12400050023505² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 55817529 + ... + 56039241.

It is an arithmetic number, because the mean of its divisors is an integer number (245332638135).

Almost surely, 2^{12400050023505} is an apocalyptic number.

12400050023505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12400050023505 is a deficient number, since it is larger than the sum of its proper divisors (11151883237455).

12400050023505 is a wasteful number, since it uses less digits than its factorization.

12400050023505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224291 (or 224288 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

Adding to 12400050023505 its reverse (50532005000421), we get a palindrome (62932055023926).

The spelling of 12400050023505 in words is "twelve trillion, four hundred billion, fifty million, twenty-three thousand, five hundred five".